399709871270 has 16 divisors (see below), whose sum is σ = 719616998448. Its totient is φ = 159853008480.

The previous prime is 399709871269. The next prime is 399709871303. The reversal of 399709871270 is 72178907993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3813209 + ... + 3916628.

It is an arithmetic number, because the mean of its divisors is an integer number (44976062403).

Almost surely, 2^399709871270 is an apocalyptic number.

399709871270 is a deficient number, since it is larger than the sum of its proper divisors (319907127178).

399709871270 is a wasteful number, since it uses less digits than its factorization.

399709871270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7735015.

The product of its (nonzero) digits is 12002256, while the sum is 62.

The spelling of 399709871270 in words is "three hundred ninety-nine billion, seven hundred nine million, eight hundred seventy-one thousand, two hundred seventy".