12905957 has 4 divisors (see below), whose sum is σ = 13351020. Its totient is φ = 12460896.

The previous prime is 12905923. The next prime is 12905969. The reversal of 12905957 is 75950921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75950921 = 2069 ⋅36709.

It can be written as a sum of positive squares in 2 ways, for example, as 10962721 + 1943236 = 3311^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 12905957 - 2⁸ = 12905701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12905957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12905257) 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, 222488 + ... + 222545.

It is an arithmetic number, because the mean of its divisors is an integer number (3337755).

Almost surely, 2^12905957 is an apocalyptic number.

It is an amenable number.

12905957 is a deficient number, since it is larger than the sum of its proper divisors (445063).

12905957 is an equidigital number, since it uses as much as digits as its factorization.

12905957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445062.

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 12905957 is about 3592.4861864731. The cubic root of 12905957 is about 234.5651048313.

The spelling of 12905957 in words is "twelve million, nine hundred five thousand, nine hundred fifty-seven".