399331135307 has 4 divisors (see below), whose sum is σ = 430048914960. Its totient is φ = 368613355656.

The previous prime is 399331135303. The next prime is 399331135361. The reversal of 399331135307 is 703531133993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 703531133993 = 24203 ⋅29067931.

It is not a de Polignac number, because 399331135307 - 2² = 399331135303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399331135303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15358889807 + ... + 15358889832.

It is an arithmetic number, because the mean of its divisors is an integer number (107512228740).

Almost surely, 2^399331135307 is an apocalyptic number.

399331135307 is a deficient number, since it is larger than the sum of its proper divisors (30717779653).

399331135307 is a wasteful number, since it uses less digits than its factorization.

399331135307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30717779652.

The product of its (nonzero) digits is 688905, while the sum is 47.

The spelling of 399331135307 in words is "three hundred ninety-nine billion, three hundred thirty-one million, one hundred thirty-five thousand, three hundred seven".