399868927 has 8 divisors (see below), whose sum is σ = 421781760. Its totient is φ = 378042840.

The previous prime is 399868921. The next prime is 399868933. The reversal of 399868927 is 729868993.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (399868921) and next prime (399868933).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 399868927 - 2¹⁵ = 399836159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399868921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12103 + ... + 30760.

It is an arithmetic number, because the mean of its divisors is an integer number (52722720).

Almost surely, 2^399868927 is an apocalyptic number.

399868927 is a deficient number, since it is larger than the sum of its proper divisors (21912833).

399868927 is a wasteful number, since it uses less digits than its factorization.

399868927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43373.

The product of its digits is 11757312, while the sum is 61.

The square root of 399868927 is about 19996.7229065165. The cubic root of 399868927 is about 736.7258114258.

The spelling of 399868927 in words is "three hundred ninety-nine million, eight hundred sixty-eight thousand, nine hundred twenty-seven".