399699035 has 16 divisors (see below), whose sum is σ = 485346816. Its totient is φ = 315969888.

The previous prime is 399698987. The next prime is 399699043. The reversal of 399699035 is 530996993.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399699035 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300542 + ... + 301868.

It is an arithmetic number, because the mean of its divisors is an integer number (30334176).

Almost surely, 2^399699035 is an apocalyptic number.

399699035 is a deficient number, since it is larger than the sum of its proper divisors (85647781).

399699035 is a wasteful number, since it uses less digits than its factorization.

399699035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002.

The product of its (nonzero) digits is 1771470, while the sum is 53.

The square root of 399699035 is about 19992.4744591559. The cubic root of 399699035 is about 736.6214592716.

The spelling of 399699035 in words is "three hundred ninety-nine million, six hundred ninety-nine thousand, thirty-five".