15149969 has 2 divisors, whose sum is σ = 15149970. Its totient is φ = 15149968.

The previous prime is 15149887. The next prime is 15149987. The reversal of 15149969 is 96994151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14348944 + 801025 = 3788^2 + 895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15149969 is a prime.

It is a super-2 number, since 2×15149969² = 459043121401922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15149999) 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 as a sum of consecutive naturals, namely, 7574984 + 7574985.

It is an arithmetic number, because the mean of its divisors is an integer number (7574985).

Almost surely, 2^15149969 is an apocalyptic number.

It is an amenable number.

15149969 is a deficient number, since it is larger than the sum of its proper divisors (1).

15149969 is an equidigital number, since it uses as much as digits as its factorization.

15149969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 44.

The square root of 15149969 is about 3892.2961089825. The cubic root of 15149969 is about 247.4403842402.

The spelling of 15149969 in words is "fifteen million, one hundred forty-nine thousand, nine hundred sixty-nine".