194939904 has 176 divisors, whose sum is σ = 565954560. Its totient is φ = 59473920.

The previous prime is 194939887. The next prime is 194939909. The reversal of 194939904 is 409939491.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (194939909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2190292 + ... + 2190380.

Almost surely, 2^194939904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194939904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282977280).

194939904 is an abundant number, since it is smaller than the sum of its proper divisors (371014656).

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

194939904 is a wasteful number, since it uses less digits than its factorization.

194939904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 194939904 is about 13962.0880959834. The cubic root of 194939904 is about 579.8294226881.

The spelling of 194939904 in words is "one hundred ninety-four million, nine hundred thirty-nine thousand, nine hundred four".