399706970699 has 16 divisors (see below), whose sum is σ = 424232510400. Its totient is φ = 375295033344.

The previous prime is 399706970693. The next prime is 399706970701. The reversal of 399706970699 is 996079607993.

It is not a de Polignac number, because 399706970699 - 2¹⁶ = 399706905163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399706970693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13502987 + ... + 13532555.

It is an arithmetic number, because the mean of its divisors is an integer number (26514531900).

Almost surely, 2^399706970699 is an apocalyptic number.

399706970699 is a deficient number, since it is larger than the sum of its proper divisors (24525539701).

399706970699 is a wasteful number, since it uses less digits than its factorization.

399706970699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31462.

The product of its (nonzero) digits is 312487308, while the sum is 74.

The spelling of 399706970699 in words is "three hundred ninety-nine billion, seven hundred six million, nine hundred seventy thousand, six hundred ninety-nine".