1397275344 has 60 divisors (see below), whose sum is σ = 3940334112. Its totient is φ = 462196800.

The previous prime is 1397275337. The next prime is 1397275379. The reversal of 1397275344 is 4435727931.

1397275344 is a `hidden beast` number, since 1 + 3 + 97 + 27 + 534 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1397275344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18172 + ... + 55899.

Almost surely, 2^1397275344 is an apocalyptic number.

It is an amenable number.

1397275344 is an abundant number, since it is smaller than the sum of its proper divisors (2543058768).

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

1397275344 is a wasteful number, since it uses less digits than its factorization.

1397275344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74216 (or 74207 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 1397275344 is about 37380.1463881564. The cubic root of 1397275344 is about 1117.9627463604.

The spelling of 1397275344 in words is "one billion, three hundred ninety-seven million, two hundred seventy-five thousand, three hundred forty-four".