15794489 has 2 divisors, whose sum is σ = 15794490. Its totient is φ = 15794488.

The previous prime is 15794437. The next prime is 15794501. The reversal of 15794489 is 98449751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12482089 + 3312400 = 3533^2 + 1820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15794489 is a prime.

It is a super-2 number, since 2×15794489² = 498931765542242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (15794419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7897244 + 7897245.

It is an arithmetic number, because the mean of its divisors is an integer number (7897245).

Almost surely, 2^15794489 is an apocalyptic number.

It is an amenable number.

15794489 is a deficient number, since it is larger than the sum of its proper divisors (1).

15794489 is an equidigital number, since it uses as much as digits as its factorization.

15794489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 15794489 is about 3974.2281011537. The cubic root of 15794489 is about 250.9006924488.

The spelling of 15794489 in words is "fifteen million, seven hundred ninety-four thousand, four hundred eighty-nine".