397621674401 has 24 divisors (see below), whose sum is σ = 482877033984. Its totient is φ = 325846973760.

The previous prime is 397621674377. The next prime is 397621674413. The reversal of 397621674401 is 104476126793.

It is not a de Polignac number, because 397621674401 - 2³⁴ = 380441805217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 397621674401.

It is not an unprimeable number, because it can be changed into a prime (397621674451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2344496 + ... + 2508366.

It is an arithmetic number, because the mean of its divisors is an integer number (20119876416).

Almost surely, 2^397621674401 is an apocalyptic number.

It is an amenable number.

397621674401 is a deficient number, since it is larger than the sum of its proper divisors (85255359583).

397621674401 is a wasteful number, since it uses less digits than its factorization.

397621674401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166061 (or 166054 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 397621674401 in words is "three hundred ninety-seven billion, six hundred twenty-one million, six hundred seventy-four thousand, four hundred one".