13487399 has 8 divisors (see below), whose sum is σ = 13666368. Its totient is φ = 13309920.

The previous prime is 13487393. The next prime is 13487437. The reversal of 13487399 is 99378431.

It is a happy number.

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 13487399 - 2¹² = 13483303 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 (13487393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42389 + ... + 42705.

It is an arithmetic number, because the mean of its divisors is an integer number (1708296).

Almost surely, 2^13487399 is an apocalyptic number.

13487399 is a deficient number, since it is larger than the sum of its proper divisors (178969).

13487399 is a wasteful number, since it uses less digits than its factorization.

13487399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745.

The product of its digits is 163296, while the sum is 44.

The square root of 13487399 is about 3672.5194349384. The cubic root of 13487399 is about 238.0360501379.

The spelling of 13487399 in words is "thirteen million, four hundred eighty-seven thousand, three hundred ninety-nine".