13144491 has 8 divisors (see below), whose sum is σ = 19473360. Its totient is φ = 8762976.

The previous prime is 13144489. The next prime is 13144513. The reversal of 13144491 is 19444131.

13144491 is a `hidden beast` number, since 131 + 44 + 491 = 666.

It is not a de Polignac number, because 13144491 - 2¹ = 13144489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 486833 = 13144491 / (1 + 3 + 1 + 4 + 4 + 4 + 9 + 1).

It is not an unprimeable number, because it can be changed into a prime (13144091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243390 + ... + 243443.

It is an arithmetic number, because the mean of its divisors is an integer number (2434170).

Almost surely, 2^13144491 is an apocalyptic number.

13144491 is a deficient number, since it is larger than the sum of its proper divisors (6328869).

13144491 is an equidigital number, since it uses as much as digits as its factorization.

13144491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486842 (or 486836 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 13144491 is about 3625.5332021649. The cubic root of 13144491 is about 236.0014064361.

The spelling of 13144491 in words is "thirteen million, one hundred forty-four thousand, four hundred ninety-one".