12135949 has 16 divisors (see below), whose sum is σ = 14469120. Its totient is φ = 9959040.

The previous prime is 12135941. The next prime is 12135967. The reversal of 12135949 is 94953121.

12135949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12135949 - 2³ = 12135941 is a prime.

It is a Duffinian number.

Its product of digits (9720) is a multiple of the sum of its prime divisors (540).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135941) 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, 38617 + ... + 38929.

It is an arithmetic number, because the mean of its divisors is an integer number (904320).

Almost surely, 2^12135949 is an apocalyptic number.

It is an amenable number.

12135949 is a deficient number, since it is larger than the sum of its proper divisors (2333171).

12135949 is a wasteful number, since it uses less digits than its factorization.

12135949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its digits is 9720, while the sum is 34.

The square root of 12135949 is about 3483.6688993072. The cubic root of 12135949 is about 229.8041748440.

The spelling of 12135949 in words is "twelve million, one hundred thirty-five thousand, nine hundred forty-nine".