399337271247 has 8 divisors (see below), whose sum is σ = 532517736240. Its totient is φ = 266190826880.

The previous prime is 399337271209. The next prime is 399337271273. The reversal of 399337271247 is 742172733993.

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 399337271247 - 2⁷ = 399337271119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399337271287) 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, 8477754 + ... + 8524727.

It is an arithmetic number, because the mean of its divisors is an integer number (66564717030).

Almost surely, 2^399337271247 is an apocalyptic number.

399337271247 is a deficient number, since it is larger than the sum of its proper divisors (133180464993).

399337271247 is a wasteful number, since it uses less digits than its factorization.

399337271247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17010313.

The product of its digits is 12002256, while the sum is 57.

The spelling of 399337271247 in words is "three hundred ninety-nine billion, three hundred thirty-seven million, two hundred seventy-one thousand, two hundred forty-seven".