15984791 has 2 divisors, whose sum is σ = 15984792. Its totient is φ = 15984790.

The previous prime is 15984763. The next prime is 15984803. The reversal of 15984791 is 19748951.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15984791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15986791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7992395 + 7992396.

It is an arithmetic number, because the mean of its divisors is an integer number (7992396).

Almost surely, 2^15984791 is an apocalyptic number.

15984791 is a deficient number, since it is larger than the sum of its proper divisors (1).

15984791 is an equidigital number, since it uses as much as digits as its factorization.

15984791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 44.

The square root of 15984791 is about 3998.0984230006. The cubic root of 15984791 is about 251.9043424204.

The spelling of 15984791 in words is "fifteen million, nine hundred eighty-four thousand, seven hundred ninety-one".