399049008 has 40 divisors (see below), whose sum is σ = 1032672000. Its totient is φ = 132784704.

The previous prime is 399049003. The next prime is 399049061. The reversal of 399049008 is 800940993.

It is a super-2 number, since 2×399049008² = 318480221571568128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (399049003) 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 7 ways as a sum of consecutive naturals, for example, 21813 + ... + 35691.

It is an arithmetic number, because the mean of its divisors is an integer number (25816800).

Almost surely, 2^399049008 is an apocalyptic number.

It is an amenable number.

399049008 is an abundant number, since it is smaller than the sum of its proper divisors (633622992).

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

399049008 is a wasteful number, since it uses less digits than its factorization.

399049008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14489 (or 14483 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 399049008 is about 19976.2110521490. The cubic root of 399049008 is about 736.2219222874.

The spelling of 399049008 in words is "three hundred ninety-nine million, forty-nine thousand, eight".