12397975 has 24 divisors (see below), whose sum is σ = 16586240. Its totient is φ = 9162720.

The previous prime is 12397969. The next prime is 12397991. The reversal of 12397975 is 57979321.

It is not a de Polignac number, because 12397975 - 2¹¹ = 12395927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20122 + ... + 20728.

Almost surely, 2^12397975 is an apocalyptic number.

12397975 is a deficient number, since it is larger than the sum of its proper divisors (4188265).

12397975 is a wasteful number, since it uses less digits than its factorization.

12397975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 674 counting only the distinct ones).

The product of its digits is 119070, while the sum is 43.

The square root of 12397975 is about 3521.0758299134. The cubic root of 12397975 is about 231.4463051891.

The spelling of 12397975 in words is "twelve million, three hundred ninety-seven thousand, nine hundred seventy-five".