13774639 has 8 divisors (see below), whose sum is σ = 14705280. Its totient is φ = 12864600.

The previous prime is 13774637. The next prime is 13774667. The reversal of 13774639 is 93647731.

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 13774639 - 2¹ = 13774637 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 (13774637) 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, 3757 + ... + 6454.

It is an arithmetic number, because the mean of its divisors is an integer number (1838160).

Almost surely, 2^13774639 is an apocalyptic number.

13774639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13774639 is a deficient number, since it is larger than the sum of its proper divisors (930641).

13774639 is a wasteful number, since it uses less digits than its factorization.

13774639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10301.

The product of its digits is 95256, while the sum is 40.

The square root of 13774639 is about 3711.4200786222. The cubic root of 13774639 is about 239.7140053964.

The spelling of 13774639 in words is "thirteen million, seven hundred seventy-four thousand, six hundred thirty-nine".