1397260797 has 4 divisors (see below), whose sum is σ = 1863014400. Its totient is φ = 931507196.

The previous prime is 1397260763. The next prime is 1397260811. The reversal of 1397260797 is 7970627931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1397260797 - 2³⁰ = 323518973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397260727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232876797 + ... + 232876802.

It is an arithmetic number, because the mean of its divisors is an integer number (465753600).

Almost surely, 2^1397260797 is an apocalyptic number.

It is an amenable number.

1397260797 is a deficient number, since it is larger than the sum of its proper divisors (465753603).

1397260797 is an equidigital number, since it uses as much as digits as its factorization.

1397260797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465753602.

The product of its (nonzero) digits is 1000188, while the sum is 51.

The square root of 1397260797 is about 37379.9518057474. The cubic root of 1397260797 is about 1117.9588666525.

The spelling of 1397260797 in words is "one billion, three hundred ninety-seven million, two hundred sixty thousand, seven hundred ninety-seven".