13744939 has 6 divisors (see below), whose sum is σ = 14883756. Its totient is φ = 12687480.

The previous prime is 13744937. The next prime is 13744949. The reversal of 13744939 is 93944731.

It is a happy number.

It is not a de Polignac number, because 13744939 - 2¹ = 13744937 is a prime.

It is a super-2 number, since 2×13744939² = 377846696227442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13744937) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40497 + ... + 40834.

It is an arithmetic number, because the mean of its divisors is an integer number (2480626).

Almost surely, 2^13744939 is an apocalyptic number.

13744939 is a deficient number, since it is larger than the sum of its proper divisors (1138817).

13744939 is an equidigital number, since it uses as much as digits as its factorization.

13744939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81357 (or 81344 counting only the distinct ones).

The product of its digits is 81648, while the sum is 40.

The square root of 13744939 is about 3707.4167556400. The cubic root of 13744939 is about 239.5415960632.

The spelling of 13744939 in words is "thirteen million, seven hundred forty-four thousand, nine hundred thirty-nine".