399927 has 8 divisors (see below), whose sum is σ = 581760. Its totient is φ = 242360.

The previous prime is 399913. The next prime is 399937. The reversal of 399927 is 729993.

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 399927 - 2⁴ = 399911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399937) 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, 6027 + ... + 6092.

It is an arithmetic number, because the mean of its divisors is an integer number (72720).

2³⁹⁹⁹²⁷ is an apocalyptic number.

399927 is a deficient number, since it is larger than the sum of its proper divisors (181833).

399927 is a wasteful number, since it uses less digits than its factorization.

399927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12133.

The product of its digits is 30618, while the sum is 39.

The square root of 399927 is about 632.3978178330. The cubic root of 399927 is about 73.6761474618.

It can be divided in two parts, 399 and 927, that added together give a triangular number (1326 = T₅₁).

The spelling of 399927 in words is "three hundred ninety-nine thousand, nine hundred twenty-seven".