12261949 has 4 divisors (see below), whose sum is σ = 14013664. Its totient is φ = 10510236.

The previous prime is 12261943. The next prime is 12261961. The reversal of 12261949 is 94916221.

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 a cyclic number.

It is not a de Polignac number, because 12261949 - 2³ = 12261941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261941) 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, 875847 + ... + 875860.

It is an arithmetic number, because the mean of its divisors is an integer number (3503416).

Almost surely, 2^12261949 is an apocalyptic number.

It is an amenable number.

12261949 is a deficient number, since it is larger than the sum of its proper divisors (1751715).

12261949 is an equidigital number, since it uses as much as digits as its factorization.

12261949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751714.

The product of its digits is 7776, while the sum is 34.

The square root of 12261949 is about 3501.7065839388. The cubic root of 12261949 is about 230.5967427673.

The spelling of 12261949 in words is "twelve million, two hundred sixty-one thousand, nine hundred forty-nine".