399055013 has 8 divisors (see below), whose sum is σ = 456332928. Its totient is φ = 341844624.

The previous prime is 399054973. The next prime is 399055021. The reversal of 399055013 is 310550993.

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 399055013 - 2⁶ = 399054949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399055913) 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, 3506 + ... + 28467.

It is an arithmetic number, because the mean of its divisors is an integer number (57041616).

Almost surely, 2^399055013 is an apocalyptic number.

It is an amenable number.

399055013 is a deficient number, since it is larger than the sum of its proper divisors (57277915).

399055013 is a wasteful number, since it uses less digits than its factorization.

399055013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33763.

The product of its (nonzero) digits is 18225, while the sum is 35.

The square root of 399055013 is about 19976.3613553620. The cubic root of 399055013 is about 736.2256152260.

The spelling of 399055013 in words is "three hundred ninety-nine million, fifty-five thousand, thirteen".