12905953 has 4 divisors (see below), whose sum is σ = 13117588. Its totient is φ = 12694320.

The previous prime is 12905923. The next prime is 12905969. The reversal of 12905953 is 35950921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35950921 = 71 ⋅506351.

It can be written as a sum of positive squares in 2 ways, for example, as 2614689 + 10291264 = 1617^2 + 3208^2 .

It is a cyclic number.

It is not a de Polignac number, because 12905953 - 2¹³ = 12897761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12905903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105726 + ... + 105847.

It is an arithmetic number, because the mean of its divisors is an integer number (3279397).

Almost surely, 2^12905953 is an apocalyptic number.

It is an amenable number.

12905953 is a deficient number, since it is larger than the sum of its proper divisors (211635).

12905953 is an equidigital number, since it uses as much as digits as its factorization.

12905953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211634.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 12905953 is about 3592.4856297555. The cubic root of 12905953 is about 234.5650805980.

The spelling of 12905953 in words is "twelve million, nine hundred five thousand, nine hundred fifty-three".