15479989 has 8 divisors (see below), whose sum is σ = 18460800. Its totient is φ = 12691536.

The previous prime is 15479987. The next prime is 15479993. The reversal of 15479989 is 98997451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15479989 - 2¹ = 15479987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15479987) 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 7 ways as a sum of consecutive naturals, for example, 47914 + ... + 48235.

It is an arithmetic number, because the mean of its divisors is an integer number (2307600).

Almost surely, 2^15479989 is an apocalyptic number.

It is an amenable number.

15479989 is a deficient number, since it is larger than the sum of its proper divisors (2980811).

15479989 is an equidigital number, since it uses as much as digits as its factorization.

15479989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96179.

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

The square root of 15479989 is about 3934.4617166774. The cubic root of 15479989 is about 249.2242030466.

The spelling of 15479989 in words is "fifteen million, four hundred seventy-nine thousand, nine hundred eighty-nine".