15319489 has 2 divisors, whose sum is σ = 15319490. Its totient is φ = 15319488.

The previous prime is 15319471. The next prime is 15319519. The reversal of 15319489 is 98491351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13838400 + 1481089 = 3720^2 + 1217^2 .

It is a cyclic number.

It is not a de Polignac number, because 15319489 - 2⁷ = 15319361 is a prime.

It is a super-2 number, since 2×15319489² = 469373486442242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15319429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7659744 + 7659745.

It is an arithmetic number, because the mean of its divisors is an integer number (7659745).

Almost surely, 2^15319489 is an apocalyptic number.

It is an amenable number.

15319489 is a deficient number, since it is larger than the sum of its proper divisors (1).

15319489 is an equidigital number, since it uses as much as digits as its factorization.

15319489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 40.

The square root of 15319489 is about 3914.0118804112. The cubic root of 15319489 is about 248.3598714438.

The spelling of 15319489 in words is "fifteen million, three hundred nineteen thousand, four hundred eighty-nine".