399240056750 has 32 divisors (see below), whose sum is σ = 750018428640. Its totient is φ = 159131697600.

The previous prime is 399240056731. The next prime is 399240056767. The reversal of 399240056750 is 57650042993.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2750735 + ... + 2892234.

It is an arithmetic number, because the mean of its divisors is an integer number (23438075895).

Almost surely, 2^399240056750 is an apocalyptic number.

399240056750 is a deficient number, since it is larger than the sum of its proper divisors (350778371890).

399240056750 is a wasteful number, since it uses less digits than its factorization.

399240056750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5643269 (or 5643259 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 50.

The spelling of 399240056750 in words is "three hundred ninety-nine billion, two hundred forty million, fifty-six thousand, seven hundred fifty".