399240056702 has 4 divisors (see below), whose sum is σ = 598860085056. Its totient is φ = 199620028350.

The previous prime is 399240056693. The next prime is 399240056713. The reversal of 399240056702 is 207650042993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 207650042993 = 42179 ⋅4923067.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99810014174 + ... + 99810014177.

It is an arithmetic number, because the mean of its divisors is an integer number (149715021264).

Almost surely, 2^399240056702 is an apocalyptic number.

399240056702 is a deficient number, since it is larger than the sum of its proper divisors (199620028354).

399240056702 is a wasteful number, since it uses less digits than its factorization.

399240056702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199620028353.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 399240056702 in words is "three hundred ninety-nine billion, two hundred forty million, fifty-six thousand, seven hundred two".