396809918260 has 48 divisors (see below), whose sum is σ = 1002467168640. Its totient is φ = 128888634240.

The previous prime is 396809918189. The next prime is 396809918269. The reversal of 396809918260 is 62819908693.

It is a super-2 number, since 2×396809918260² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396809918269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74585671 + ... + 74590990.

It is an arithmetic number, because the mean of its divisors is an integer number (20884732680).

Almost surely, 2^396809918260 is an apocalyptic number.

It is an amenable number.

396809918260 is an abundant number, since it is smaller than the sum of its proper divisors (605657250380).

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

396809918260 is a wasteful number, since it uses less digits than its factorization.

396809918260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149176696 (or 149176694 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 61.

The spelling of 396809918260 in words is "three hundred ninety-six billion, eight hundred nine million, nine hundred eighteen thousand, two hundred sixty".