398064890260 has 48 divisors (see below), whose sum is σ = 885160740240. Its totient is φ = 149850961920.

The previous prime is 398064890219. The next prime is 398064890261. The reversal of 398064890260 is 62098460893.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 133541136 + 397931349124 = 11556^2 + 630818^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398064890261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11361970 + ... + 11396950.

It is an arithmetic number, because the mean of its divisors is an integer number (18440848755).

Almost surely, 2^398064890260 is an apocalyptic number.

It is an amenable number.

398064890260 is an abundant number, since it is smaller than the sum of its proper divisors (487095849980).

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

398064890260 is a wasteful number, since it uses less digits than its factorization.

398064890260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68476 (or 68474 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 398064890260 in words is "three hundred ninety-eight billion, sixty-four million, eight hundred ninety thousand, two hundred sixty".