329955138 has 24 divisors (see below), whose sum is σ = 715551408. Its totient is φ = 109885272.

The previous prime is 329955133. The next prime is 329955149. The reversal of 329955138 is 831559923.

329955138 is a `hidden beast` number, since 3 + 2 + 99 + 551 + 3 + 8 = 666.

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 329955093 and 329955102.

It is not an unprimeable number, because it can be changed into a prime (329955133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13645 + ... + 29087.

It is an arithmetic number, because the mean of its divisors is an integer number (29814642).

Almost surely, 2^329955138 is an apocalyptic number.

329955138 is an abundant number, since it is smaller than the sum of its proper divisors (385596270).

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

329955138 is a wasteful number, since it uses less digits than its factorization.

329955138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16638 (or 16635 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 329955138 is about 18164.6672967054. The cubic root of 329955138 is about 691.0110068944.

The spelling of 329955138 in words is "three hundred twenty-nine million, nine hundred fifty-five thousand, one hundred thirty-eight".