13489805 has 16 divisors (see below), whose sum is σ = 19098624. Its totient is φ = 8951040.

The previous prime is 13489783. The next prime is 13489837. The reversal of 13489805 is 50898431.

It is not a de Polignac number, because 13489805 - 2⁸ = 13489549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5132 + ... + 7301.

It is an arithmetic number, because the mean of its divisors is an integer number (1193664).

Almost surely, 2^13489805 is an apocalyptic number.

It is an amenable number.

13489805 is a deficient number, since it is larger than the sum of its proper divisors (5608819).

13489805 is a wasteful number, since it uses less digits than its factorization.

13489805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12476.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 13489805 is about 3672.8469883729. The cubic root of 13489805 is about 238.0502036127.

The spelling of 13489805 in words is "thirteen million, four hundred eighty-nine thousand, eight hundred five".