399260793 has 16 divisors (see below), whose sum is σ = 570459456. Its totient is φ = 247495680.

The previous prime is 399260789. The next prime is 399260809. The reversal of 399260793 is 397062993.

It is not a de Polignac number, because 399260793 - 2² = 399260789 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399260293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42928 + ... + 51393.

It is an arithmetic number, because the mean of its divisors is an integer number (35653716).

Almost surely, 2^399260793 is an apocalyptic number.

It is an amenable number.

399260793 is a deficient number, since it is larger than the sum of its proper divisors (171198663).

399260793 is a wasteful number, since it uses less digits than its factorization.

399260793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94424.

The product of its (nonzero) digits is 551124, while the sum is 48.

The square root of 399260793 is about 19981.5112791801. The cubic root of 399260793 is about 736.3521428711.

The spelling of 399260793 in words is "three hundred ninety-nine million, two hundred sixty thousand, seven hundred ninety-three".