397319953860 has 72 divisors (see below), whose sum is σ = 1205857388736. Its totient is φ = 105894534720.

The previous prime is 397319953853. The next prime is 397319953871. The reversal of 397319953860 is 68359913793.

397319953860 is a `hidden beast` number, since 3 + 9 + 7 + 3 + 1 + 99 + 538 + 6 + 0 = 666.

It is a super-3 number, since 3×397319953860³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265086 + ... + 930005.

It is an arithmetic number, because the mean of its divisors is an integer number (16748019288).

Almost surely, 2^397319953860 is an apocalyptic number.

397319953860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397319953860 is an abundant number, since it is smaller than the sum of its proper divisors (808537434876).

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

397319953860 is a wasteful number, since it uses less digits than its factorization.

397319953860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196953 (or 1196948 counting only the distinct ones).

The product of its (nonzero) digits is 33067440, while the sum is 63.

The spelling of 397319953860 in words is "three hundred ninety-seven billion, three hundred nineteen million, nine hundred fifty-three thousand, eight hundred sixty".