12397995 has 16 divisors (see below), whose sum is σ = 22041120. Its totient is φ = 6612192.

The previous prime is 12397991. The next prime is 12398011. The reversal of 12397995 is 59979321.

It is a happy number.

It is not a de Polignac number, because 12397995 - 2² = 12397991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12397995.

It is not an unprimeable number, because it can be changed into a prime (12397991) 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, 45784 + ... + 46053.

It is an arithmetic number, because the mean of its divisors is an integer number (1377570).

Almost surely, 2^12397995 is an apocalyptic number.

12397995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12397995 is a deficient number, since it is larger than the sum of its proper divisors (9643125).

12397995 is an equidigital number, since it uses as much as digits as its factorization.

12397995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91851 (or 91845 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 12397995 is about 3521.0786699533. The cubic root of 12397995 is about 231.4464296429.

The spelling of 12397995 in words is "twelve million, three hundred ninety-seven thousand, nine hundred ninety-five".