399726027 has 12 divisors (see below), whose sum is σ = 585292344. Its totient is φ = 262833120.

The previous prime is 399726007. The next prime is 399726029. The reversal of 399726027 is 720627993.

It is a happy number.

399726027 is a `hidden beast` number, since 39 + 9 + 7 + 2 + 602 + 7 = 666.

It is not a de Polignac number, because 399726027 - 2⁷ = 399725899 is a prime.

It is a super-2 number, since 2×399726027² = 319561793322409458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (399726029) 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, 303549 + ... + 304862.

It is an arithmetic number, because the mean of its divisors is an integer number (48774362).

Almost surely, 2^399726027 is an apocalyptic number.

399726027 is a deficient number, since it is larger than the sum of its proper divisors (185566317).

399726027 is a wasteful number, since it uses less digits than its factorization.

399726027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608490 (or 608487 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 399726027 is about 19993.1495017668. The cubic root of 399726027 is about 736.6380404465.

The spelling of 399726027 in words is "three hundred ninety-nine million, seven hundred twenty-six thousand, twenty-seven".