13956247 has 2 divisors, whose sum is σ = 13956248. Its totient is φ = 13956246.

The previous prime is 13956233. The next prime is 13956311. The reversal of 13956247 is 74265931.

It is a weak prime.

It is an emirp because it is prime and its reverse (74265931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13956247 - 2¹⁵ = 13923479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13956947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6978123 + 6978124.

It is an arithmetic number, because the mean of its divisors is an integer number (6978124).

Almost surely, 2^13956247 is an apocalyptic number.

13956247 is a deficient number, since it is larger than the sum of its proper divisors (1).

13956247 is an equidigital number, since it uses as much as digits as its factorization.

13956247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 13956247 is about 3735.8060709839. The cubic root of 13956247 is about 240.7628907083.

The spelling of 13956247 in words is "thirteen million, nine hundred fifty-six thousand, two hundred forty-seven".