398795020885 has 8 divisors (see below), whose sum is σ = 481033580760. Its totient is φ = 317382979584.

The previous prime is 398795020861. The next prime is 398795020891. The reversal of 398795020885 is 588020597893.

It can be written as a sum of positive squares in 4 ways, for example, as 69472834929 + 329322185956 = 263577^2 + 573866^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398795020885 - 2²⁷ = 398660803157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206628580 + ... + 206630509.

It is an arithmetic number, because the mean of its divisors is an integer number (60129197595).

Almost surely, 2^398795020885 is an apocalyptic number.

It is an amenable number.

398795020885 is a deficient number, since it is larger than the sum of its proper divisors (82238559875).

398795020885 is a wasteful number, since it uses less digits than its factorization.

398795020885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413259287.

The product of its (nonzero) digits is 43545600, while the sum is 64.

The spelling of 398795020885 in words is "three hundred ninety-eight billion, seven hundred ninety-five million, twenty thousand, eight hundred eighty-five".