399214870287 has 4 divisors (see below), whose sum is σ = 532286493720. Its totient is φ = 266143246856.

The previous prime is 399214870273. The next prime is 399214870303. The reversal of 399214870287 is 782078412993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 399214870287 - 2³⁵ = 364855131919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 399214870287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399214870687) 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, 66535811712 + ... + 66535811717.

It is an arithmetic number, because the mean of its divisors is an integer number (133071623430).

Almost surely, 2^399214870287 is an apocalyptic number.

399214870287 is a deficient number, since it is larger than the sum of its proper divisors (133071623433).

399214870287 is a wasteful number, since it uses less digits than its factorization.

399214870287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133071623432.

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 399214870287 in words is "three hundred ninety-nine billion, two hundred fourteen million, eight hundred seventy thousand, two hundred eighty-seven".