397192401 has 12 divisors (see below), whose sum is σ = 578801028. Its totient is φ = 262450944.

The previous prime is 397192357. The next prime is 397192409. The reversal of 397192401 is 104291793.

It can be written as a sum of positive squares in 2 ways, for example, as 50339025 + 346853376 = 7095^2 + 18624^2 .

It is not a de Polignac number, because 397192401 - 2⁶ = 397192337 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (397192409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194260 + ... + 196293.

It is an arithmetic number, because the mean of its divisors is an integer number (48233419).

Almost surely, 2^397192401 is an apocalyptic number.

It is an amenable number.

397192401 is a deficient number, since it is larger than the sum of its proper divisors (181608627).

397192401 is a wasteful number, since it uses less digits than its factorization.

397192401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390672 (or 390669 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 397192401 is about 19929.6864250294. The cubic root of 397192401 is about 735.0783700968.

The spelling of 397192401 in words is "three hundred ninety-seven million, one hundred ninety-two thousand, four hundred one".