15379913 has 2 divisors, whose sum is σ = 15379914. Its totient is φ = 15379912.

The previous prime is 15379843. The next prime is 15379921. The reversal of 15379913 is 31997351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10936249 + 4443664 = 3307^2 + 2108^2 .

It is an emirp because it is prime and its reverse (31997351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15379913 - 2¹⁰ = 15378889 is a prime.

It is equal to p₉₉₃₆₅₆ and since 15379913 and 993656 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (15379993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7689956 + 7689957.

It is an arithmetic number, because the mean of its divisors is an integer number (7689957).

Almost surely, 2^15379913 is an apocalyptic number.

It is an amenable number.

15379913 is a deficient number, since it is larger than the sum of its proper divisors (1).

15379913 is an equidigital number, since it uses as much as digits as its factorization.

15379913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 38.

The square root of 15379913 is about 3921.7232181785. The cubic root of 15379913 is about 248.6859747850.

The spelling of 15379913 in words is "fifteen million, three hundred seventy-nine thousand, nine hundred thirteen".