12890649 has 16 divisors (see below), whose sum is σ = 18035712. Its totient is φ = 8173968.

The previous prime is 12890629. The next prime is 12890653. The reversal of 12890649 is 94609821.

It is not a de Polignac number, because 12890649 - 2⁵ = 12890617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12890609) 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, 15252 + ... + 16074.

It is an arithmetic number, because the mean of its divisors is an integer number (1127232).

Almost surely, 2^12890649 is an apocalyptic number.

It is an amenable number.

12890649 is a deficient number, since it is larger than the sum of its proper divisors (5145063).

12890649 is a wasteful number, since it uses less digits than its factorization.

12890649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 12890649 is about 3590.3549963757. The cubic root of 12890649 is about 234.4723274356.

The spelling of 12890649 in words is "twelve million, eight hundred ninety thousand, six hundred forty-nine".