397406833984 has 28 divisors (see below), whose sum is σ = 788624389728. Its totient is φ = 198698326400.

The previous prime is 397406833951. The next prime is 397406834017. The reversal of 397406833984 is 489338604793.

It is an interprime number because it is at equal distance from previous prime (397406833951) and next prime (397406834017).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4352319 + ... + 4442689.

It is an arithmetic number, because the mean of its divisors is an integer number (28165156776).

Almost surely, 2^397406833984 is an apocalyptic number.

It is an amenable number.

397406833984 is a deficient number, since it is larger than the sum of its proper divisors (391217555744).

397406833984 is an equidigital number, since it uses as much as digits as its factorization.

397406833984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159094 (or 159084 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 64.

The spelling of 397406833984 in words is "three hundred ninety-seven billion, four hundred six million, eight hundred thirty-three thousand, nine hundred eighty-four".