399870027 has 10 divisors (see below), whose sum is σ = 597336828. Its totient is φ = 266579964.

The previous prime is 399869957. The next prime is 399870101. The reversal of 399870027 is 720078993.

It is a de Polignac number, because none of the positive numbers 2^k-399870027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399870127) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2468253 + ... + 2468414.

Almost surely, 2^399870027 is an apocalyptic number.

399870027 is a deficient number, since it is larger than the sum of its proper divisors (197466801).

399870027 is an equidigital number, since it uses as much as digits as its factorization.

399870027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4936679 (or 4936670 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 399870027 is about 19996.7504110043. The cubic root of 399870027 is about 736.7264869785.

The spelling of 399870027 in words is "three hundred ninety-nine million, eight hundred seventy thousand, twenty-seven".