399240056694 has 16 divisors (see below), whose sum is σ = 799745541120. Its totient is φ = 132869114280.

The previous prime is 399240056693. The next prime is 399240056713. The reversal of 399240056694 is 496650042993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399240056693) 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, 52722054 + ... + 52729625.

It is an arithmetic number, because the mean of its divisors is an integer number (49984096320).

Almost surely, 2^399240056694 is an apocalyptic number.

399240056694 is an abundant number, since it is smaller than the sum of its proper divisors (400505484426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399240056694 is a wasteful number, since it uses less digits than its factorization.

399240056694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105452315.

The product of its (nonzero) digits is 12597120, while the sum is 57.

The spelling of 399240056694 in words is "three hundred ninety-nine billion, two hundred forty million, fifty-six thousand, six hundred ninety-four".