399045612 has 36 divisors (see below), whose sum is σ = 1083125400. Its totient is φ = 114012864.

The previous prime is 399045611. The next prime is 399045617. The reversal of 399045612 is 216540993.

It is not an unprimeable number, because it can be changed into a prime (399045611) 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, 338737 + ... + 339912.

Almost surely, 2^399045612 is an apocalyptic number.

It is an amenable number.

399045612 is an abundant number, since it is smaller than the sum of its proper divisors (684079788).

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

399045612 is a wasteful number, since it uses less digits than its factorization.

399045612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678670 (or 678661 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 399045612 is about 19976.1260508638. The cubic root of 399045612 is about 736.2198338081.

The spelling of 399045612 in words is "three hundred ninety-nine million, forty-five thousand, six hundred twelve".