399013719 has 8 divisors (see below), whose sum is σ = 572942832. Its totient is φ = 245546880.

The previous prime is 399013709. The next prime is 399013739. The reversal of 399013719 is 917310993.

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

It is not a de Polignac number, because 399013719 - 2⁵ = 399013687 is a prime.

It is a super-2 number, since 2×399013719² = 318423895900421922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399013709) 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, 5115522 + ... + 5115599.

It is an arithmetic number, because the mean of its divisors is an integer number (71617854).

Almost surely, 2^399013719 is an apocalyptic number.

399013719 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

399013719 is a deficient number, since it is larger than the sum of its proper divisors (173929113).

399013719 is a wasteful number, since it uses less digits than its factorization.

399013719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10231137.

The product of its (nonzero) digits is 45927, while the sum is 42.

The square root of 399013719 is about 19975.3277570106. The cubic root of 399013719 is about 736.2002196053.

The spelling of 399013719 in words is "three hundred ninety-nine million, thirteen thousand, seven hundred nineteen".