13739481 has 12 divisors (see below), whose sum is σ = 22681152. Its totient is φ = 7851096.

The previous prime is 13739471. The next prime is 13739497. The reversal of 13739481 is 18493731.

It is a happy number.

It is not a de Polignac number, because 13739481 - 2⁵ = 13739449 is a prime.

It is a super-2 number, since 2×13739481² = 377546676298722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13739471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108981 + ... + 109106.

It is an arithmetic number, because the mean of its divisors is an integer number (1890096).

Almost surely, 2^13739481 is an apocalyptic number.

It is an amenable number.

13739481 is a deficient number, since it is larger than the sum of its proper divisors (8941671).

13739481 is a wasteful number, since it uses less digits than its factorization.

13739481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218100 (or 218097 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 13739481 is about 3706.6805905014. The cubic root of 13739481 is about 239.5098852125.

The spelling of 13739481 in words is "thirteen million, seven hundred thirty-nine thousand, four hundred eighty-one".