12959897 has 4 divisors (see below), whose sum is σ = 13406820. Its totient is φ = 12512976.

The previous prime is 12959893. The next prime is 12959927. The reversal of 12959897 is 79895921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9759376 + 3200521 = 3124^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 12959897 - 2² = 12959893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12959893) 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, 223418 + ... + 223475.

It is an arithmetic number, because the mean of its divisors is an integer number (3351705).

Almost surely, 2^12959897 is an apocalyptic number.

It is an amenable number.

12959897 is a deficient number, since it is larger than the sum of its proper divisors (446923).

12959897 is an equidigital number, since it uses as much as digits as its factorization.

12959897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446922.

The product of its digits is 408240, while the sum is 50.

The square root of 12959897 is about 3599.9856944160. The cubic root of 12959897 is about 234.8914361979.

The spelling of 12959897 in words is "twelve million, nine hundred fifty-nine thousand, eight hundred ninety-seven".