12894931 has 4 divisors (see below), whose sum is σ = 14737072. Its totient is φ = 11052792.

The previous prime is 12894929. The next prime is 12894941. The reversal of 12894931 is 13949821.

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

It is a cyclic number.

It is not a de Polignac number, because 12894931 - 2¹ = 12894929 is a prime.

It is a super-2 number, since 2×12894931² = 332558490989522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12894941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921060 + ... + 921073.

It is an arithmetic number, because the mean of its divisors is an integer number (3684268).

Almost surely, 2^12894931 is an apocalyptic number.

12894931 is a deficient number, since it is larger than the sum of its proper divisors (1842141).

12894931 is an equidigital number, since it uses as much as digits as its factorization.

12894931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842140.

The product of its digits is 15552, while the sum is 37.

The square root of 12894931 is about 3590.9512667259. The cubic root of 12894931 is about 234.4982868050.

It can be divided in two parts, 128 and 94931, that added together give a palindrome (95059).

The spelling of 12894931 in words is "twelve million, eight hundred ninety-four thousand, nine hundred thirty-one".