12800949 has 32 divisors (see below), whose sum is σ = 21565440. Its totient is φ = 6580992.

The previous prime is 12800941. The next prime is 12800951. The reversal of 12800949 is 94900821.

It is not a de Polignac number, because 12800949 - 2³ = 12800941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12800941) 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 31 ways as a sum of consecutive naturals, for example, 7432 + ... + 8990.

It is an arithmetic number, because the mean of its divisors is an integer number (673920).

Almost surely, 2^12800949 is an apocalyptic number.

It is an amenable number.

12800949 is a deficient number, since it is larger than the sum of its proper divisors (8764491).

12800949 is a wasteful number, since it uses less digits than its factorization.

12800949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12800949 is about 3577.8413883234. The cubic root of 12800949 is about 233.9271999409.

The spelling of 12800949 in words is "twelve million, eight hundred thousand, nine hundred forty-nine".