13926749 has 4 divisors (see below), whose sum is σ = 13954620. Its totient is φ = 13898880.

The previous prime is 13926743. The next prime is 13926751. The reversal of 13926749 is 94762931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9966649 + 3960100 = 3157^2 + 1990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13926749 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 (13926743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13172 + ... + 14189.

It is an arithmetic number, because the mean of its divisors is an integer number (3488655).

Almost surely, 2^13926749 is an apocalyptic number.

It is an amenable number.

13926749 is a deficient number, since it is larger than the sum of its proper divisors (27871).

13926749 is an equidigital number, since it uses as much as digits as its factorization.

13926749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27870.

The product of its digits is 81648, while the sum is 41.

The square root of 13926749 is about 3731.8559725691. The cubic root of 13926749 is about 240.5931451394.

The spelling of 13926749 in words is "thirteen million, nine hundred twenty-six thousand, seven hundred forty-nine".