13745279 has 2 divisors, whose sum is σ = 13745280. Its totient is φ = 13745278.

The previous prime is 13745261. The next prime is 13745287. The reversal of 13745279 is 97254731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13745279 - 2¹² = 13741183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13741279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6872639 + 6872640.

It is an arithmetic number, because the mean of its divisors is an integer number (6872640).

Almost surely, 2^13745279 is an apocalyptic number.

13745279 is a deficient number, since it is larger than the sum of its proper divisors (1).

13745279 is an equidigital number, since it uses as much as digits as its factorization.

13745279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 13745279 is about 3707.4626093866. The cubic root of 13745279 is about 239.5435711774.

The spelling of 13745279 in words is "thirteen million, seven hundred forty-five thousand, two hundred seventy-nine".