13634389 has 8 divisors (see below), whose sum is σ = 14455808. Its totient is φ = 12836880.

The previous prime is 13634363. The next prime is 13634399. The reversal of 13634389 is 98343631.

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 13634389 - 2⁹ = 13633877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13634329) 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, 4797 + ... + 7090.

It is an arithmetic number, because the mean of its divisors is an integer number (1806976).

Almost surely, 2^13634389 is an apocalyptic number.

It is an amenable number.

13634389 is a deficient number, since it is larger than the sum of its proper divisors (821419).

13634389 is a wasteful number, since it uses less digits than its factorization.

13634389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11955.

The product of its digits is 46656, while the sum is 37.

The square root of 13634389 is about 3692.4773526726. The cubic root of 13634389 is about 238.8976587210.

The spelling of 13634389 in words is "thirteen million, six hundred thirty-four thousand, three hundred eighty-nine".