399236330 has 64 divisors (see below), whose sum is σ = 804349440. Its totient is φ = 141947904.

The previous prime is 399236329. The next prime is 399236351. The reversal of 399236330 is 33632993.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230849 + ... + 232571.

It is an arithmetic number, because the mean of its divisors is an integer number (12567960).

Almost surely, 2^399236330 is an apocalyptic number.

399236330 is an abundant number, since it is smaller than the sum of its proper divisors (405113110).

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

399236330 is a wasteful number, since it uses less digits than its factorization.

399236330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823.

The product of its (nonzero) digits is 78732, while the sum is 38.

The square root of 399236330 is about 19980.8991289181. The cubic root of 399236330 is about 736.3371036197.

The spelling of 399236330 in words is "three hundred ninety-nine million, two hundred thirty-six thousand, three hundred thirty".