13256949 has 4 divisors (see below), whose sum is σ = 17675936. Its totient is φ = 8837964.

The previous prime is 13256941. The next prime is 13256959. The reversal of 13256949 is 94965231.

13256949 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13256949 - 2³ = 13256941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256941) 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, 2209489 + ... + 2209494.

It is an arithmetic number, because the mean of its divisors is an integer number (4418984).

Almost surely, 2^13256949 is an apocalyptic number.

It is an amenable number.

13256949 is a deficient number, since it is larger than the sum of its proper divisors (4418987).

13256949 is an equidigital number, since it uses as much as digits as its factorization.

13256949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4418986.

The product of its digits is 58320, while the sum is 39.

The square root of 13256949 is about 3641.0093380820. The cubic root of 13256949 is about 236.6725346249.

The spelling of 13256949 in words is "thirteen million, two hundred fifty-six thousand, nine hundred forty-nine".