15329969 has 2 divisors, whose sum is σ = 15329970. Its totient is φ = 15329968.

The previous prime is 15329933. The next prime is 15329981. The reversal of 15329969 is 96992351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13542400 + 1787569 = 3680^2 + 1337^2 .

It is an emirp because it is prime and its reverse (96992351) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15329969 is a prime.

It is a super-2 number, since 2×15329969² = 470015899081922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15329929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7664984 + 7664985.

It is an arithmetic number, because the mean of its divisors is an integer number (7664985).

Almost surely, 2^15329969 is an apocalyptic number.

It is an amenable number.

15329969 is a deficient number, since it is larger than the sum of its proper divisors (1).

15329969 is an equidigital number, since it uses as much as digits as its factorization.

15329969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 44.

The square root of 15329969 is about 3915.3504313152. The cubic root of 15329969 is about 248.4164925264.

The spelling of 15329969 in words is "fifteen million, three hundred twenty-nine thousand, nine hundred sixty-nine".