399752054515 has 32 divisors (see below), whose sum is σ = 541011566592. Its totient is φ = 280923984000.

The previous prime is 399752054483. The next prime is 399752054539. The reversal of 399752054515 is 515450257993.

It is not a de Polignac number, because 399752054515 - 2⁵ = 399752054483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 949654 + ... + 1304356.

It is an arithmetic number, because the mean of its divisors is an integer number (16906611456).

Almost surely, 2^399752054515 is an apocalyptic number.

399752054515 is a deficient number, since it is larger than the sum of its proper divisors (141259512077).

399752054515 is a wasteful number, since it uses less digits than its factorization.

399752054515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355411.

The product of its (nonzero) digits is 8505000, while the sum is 55.

The spelling of 399752054515 in words is "three hundred ninety-nine billion, seven hundred fifty-two million, fifty-four thousand, five hundred fifteen".