399598895993 has 32 divisors (see below), whose sum is σ = 442621895040. Its totient is φ = 357748899840.

The previous prime is 399598895981. The next prime is 399598895999.

399598895993 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 399598895993 - 2¹⁶ = 399598830457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399598895999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88541705 + ... + 88546217.

It is an arithmetic number, because the mean of its divisors is an integer number (13831934220).

Almost surely, 2^399598895993 is an apocalyptic number.

It is an amenable number.

399598895993 is a deficient number, since it is larger than the sum of its proper divisors (43022999047).

399598895993 is a wasteful number, since it uses less digits than its factorization.

399598895993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129.

The product of its digits is 7652750400, while the sum is 86.

The spelling of 399598895993 in words is "three hundred ninety-nine billion, five hundred ninety-eight million, eight hundred ninety-five thousand, nine hundred ninety-three".