1397975039 has 16 divisors (see below), whose sum is σ = 1471352064. Its totient is φ = 1326585600.

The previous prime is 1397975017. The next prime is 1397975041. The reversal of 1397975039 is 9305797931.

It is a cyclic number.

It is not a de Polignac number, because 1397975039 - 2²⁴ = 1381197823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397975099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407897 + ... + 411309.

It is an arithmetic number, because the mean of its divisors is an integer number (91959504).

Almost surely, 2^1397975039 is an apocalyptic number.

1397975039 is a deficient number, since it is larger than the sum of its proper divisors (73377025).

1397975039 is a wasteful number, since it uses less digits than its factorization.

1397975039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698.

The product of its (nonzero) digits is 1607445, while the sum is 53.

The square root of 1397975039 is about 37389.5043962875. The cubic root of 1397975039 is about 1118.1493243349.

The spelling of 1397975039 in words is "one billion, three hundred ninety-seven million, nine hundred seventy-five thousand, thirty-nine".