13489491 has 4 divisors (see below), whose sum is σ = 17985992. Its totient is φ = 8992992.

The previous prime is 13489481. The next prime is 13489529. The reversal of 13489491 is 19498431.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-13489491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13489481) 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, 2248246 + ... + 2248251.

It is an arithmetic number, because the mean of its divisors is an integer number (4496498).

Almost surely, 2^13489491 is an apocalyptic number.

13489491 is a deficient number, since it is larger than the sum of its proper divisors (4496501).

13489491 is an equidigital number, since it uses as much as digits as its factorization.

13489491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4496500.

The product of its digits is 31104, while the sum is 39.

The square root of 13489491 is about 3672.8042419928. The cubic root of 13489491 is about 238.0483565797.

The spelling of 13489491 in words is "thirteen million, four hundred eighty-nine thousand, four hundred ninety-one".