12013949 has 2 divisors, whose sum is σ = 12013950. Its totient is φ = 12013948.

The previous prime is 12013931. The next prime is 12013973. The reversal of 12013949 is 94931021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 145924 = 3445^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 12013949 - 2¹⁶ = 11948413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12013919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006974 + 6006975.

It is an arithmetic number, because the mean of its divisors is an integer number (6006975).

Almost surely, 2^12013949 is an apocalyptic number.

It is an amenable number.

12013949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013949 is an equidigital number, since it uses as much as digits as its factorization.

12013949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 12013949 is about 3466.1143951116. The cubic root of 12013949 is about 229.0315231548.

The spelling of 12013949 in words is "twelve million, thirteen thousand, nine hundred forty-nine".