194669440 has 128 divisors (see below), whose sum is σ = 560102400. Its totient is φ = 63203328.

The previous prime is 194669413. The next prime is 194669443. The reversal of 194669440 is 44966491.

194669440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194669443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83977 + ... + 86263.

It is an arithmetic number, because the mean of its divisors is an integer number (4375800).

Almost surely, 2^194669440 is an apocalyptic number.

194669440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194669440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280051200).

194669440 is an abundant number, since it is smaller than the sum of its proper divisors (365432960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194669440 is a wasteful number, since it uses less digits than its factorization.

194669440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332 (or 2320 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 194669440 is about 13952.3990768613. The cubic root of 194669440 is about 579.5611424570.

The spelling of 194669440 in words is "one hundred ninety-four million, six hundred sixty-nine thousand, four hundred forty".