15464489 has 4 divisors (see below), whose sum is σ = 15542400. Its totient is φ = 15386580.

The previous prime is 15464479. The next prime is 15464497. The reversal of 15464489 is 98446451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15464489 - 2⁴ = 15464473 is a prime.

It is a super-2 number, since 2×15464489² = 478300840062242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15464479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38657 + ... + 39054.

It is an arithmetic number, because the mean of its divisors is an integer number (3885600).

Almost surely, 2^15464489 is an apocalyptic number.

It is an amenable number.

15464489 is a deficient number, since it is larger than the sum of its proper divisors (77911).

15464489 is an equidigital number, since it uses as much as digits as its factorization.

15464489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77910.

The product of its digits is 138240, while the sum is 41.

The square root of 15464489 is about 3932.4914494503. The cubic root of 15464489 is about 249.1409931428.

The spelling of 15464489 in words is "fifteen million, four hundred sixty-four thousand, four hundred eighty-nine".