15998479 has 16 divisors (see below), whose sum is σ = 19476288. Its totient is φ = 12828672.

The previous prime is 15998473. The next prime is 15998491. The reversal of 15998479 is 97489951.

It is a cyclic number.

It is not a de Polignac number, because 15998479 - 2⁵ = 15998447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15998473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27439 + ... + 28015.

It is an arithmetic number, because the mean of its divisors is an integer number (1217268).

Almost surely, 2^15998479 is an apocalyptic number.

15998479 is a deficient number, since it is larger than the sum of its proper divisors (3477809).

15998479 is a wasteful number, since it uses less digits than its factorization.

15998479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834.

The product of its digits is 816480, while the sum is 52.

The square root of 15998479 is about 3999.8098704813. The cubic root of 15998479 is about 251.9762249763.

The spelling of 15998479 in words is "fifteen million, nine hundred ninety-eight thousand, four hundred seventy-nine".