194946440 has 64 divisors (see below), whose sum is σ = 474692400. Its totient is φ = 71626752.

The previous prime is 194946421. The next prime is 194946457. The reversal of 194946440 is 44649491.

It is a happy number.

194946440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 76702564 + 118243876 = 8758^2 + 10874^2 .

It is a super-2 number, since 2×194946440² = 76008228937347200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120356 + ... + 121964.

Almost surely, 2^194946440 is an apocalyptic number.

194946440 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 194946440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237346200).

194946440 is an abundant number, since it is smaller than the sum of its proper divisors (279745960).

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

194946440 is a wasteful number, since it uses less digits than its factorization.

194946440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866 (or 1862 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 194946440 is about 13962.3221564323. The cubic root of 194946440 is about 579.8359028438.

The spelling of 194946440 in words is "one hundred ninety-four million, nine hundred forty-six thousand, four hundred forty".