399587085 has 48 divisors (see below), whose sum is σ = 722442240. Its totient is φ = 204059520.

The previous prime is 399587033. The next prime is 399587099. The reversal of 399587085 is 580785993.

It is not a de Polignac number, because 399587085 - 2⁶ = 399587021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164530 + ... + 166940.

It is an arithmetic number, because the mean of its divisors is an integer number (15050880).

Almost surely, 2^399587085 is an apocalyptic number.

It is an amenable number.

399587085 is a deficient number, since it is larger than the sum of its proper divisors (322855155).

399587085 is a wasteful number, since it uses less digits than its factorization.

399587085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578 (or 2575 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The square root of 399587085 is about 19989.6744595804. The cubic root of 399587085 is about 736.5526804610.

The spelling of 399587085 in words is "three hundred ninety-nine million, five hundred eighty-seven thousand, eighty-five".