13974439 has 4 divisors (see below), whose sum is σ = 13983400. Its totient is φ = 13965480.

The previous prime is 13974437. The next prime is 13974451. The reversal of 13974439 is 93447931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13974439 - 2¹ = 13974437 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 (13974437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1464 + ... + 5485.

It is an arithmetic number, because the mean of its divisors is an integer number (3495850).

Almost surely, 2^13974439 is an apocalyptic number.

13974439 is a deficient number, since it is larger than the sum of its proper divisors (8961).

13974439 is an equidigital number, since it uses as much as digits as its factorization.

13974439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8960.

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

The square root of 13974439 is about 3738.2400939480. The cubic root of 13974439 is about 240.8674569475.

The spelling of 13974439 in words is "thirteen million, nine hundred seventy-four thousand, four hundred thirty-nine".