13747739 has 2 divisors, whose sum is σ = 13747740. Its totient is φ = 13747738.

The previous prime is 13747733. The next prime is 13747759. The reversal of 13747739 is 93774731.

It is a happy number.

13747739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (93774731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13747739 is a prime.

It is a super-2 number, since 2×13747739² = 378000655224242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13747696 and 13747705.

It is not a weakly prime, because it can be changed into another prime (13747733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6873869 + 6873870.

It is an arithmetic number, because the mean of its divisors is an integer number (6873870).

Almost surely, 2^13747739 is an apocalyptic number.

13747739 is a deficient number, since it is larger than the sum of its proper divisors (1).

13747739 is an equidigital number, since it uses as much as digits as its factorization.

13747739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 41.

The square root of 13747739 is about 3707.7943578359. The cubic root of 13747739 is about 239.5578607390.

The spelling of 13747739 in words is "thirteen million, seven hundred forty-seven thousand, seven hundred thirty-nine".