399862870 has 32 divisors (see below), whose sum is σ = 786342816. Its totient is φ = 145190400.

The previous prime is 399862867. The next prime is 399862913. The reversal of 399862870 is 78268993.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85390 + ... + 89950.

It is an arithmetic number, because the mean of its divisors is an integer number (24573213).

Almost surely, 2^399862870 is an apocalyptic number.

399862870 is a deficient number, since it is larger than the sum of its proper divisors (386479946).

399862870 is a wasteful number, since it uses less digits than its factorization.

399862870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 399862870 is about 19996.5714561272. The cubic root of 399862870 is about 736.7220915646.

The spelling of 399862870 in words is "three hundred ninety-nine million, eight hundred sixty-two thousand, eight hundred seventy".