13956397 has 16 divisors (see below), whose sum is σ = 17355520. Its totient is φ = 10927872.

The previous prime is 13956389. The next prime is 13956401. The reversal of 13956397 is 79365931.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13956397 - 2³ = 13956389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13956097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8629 + ... + 10117.

It is an arithmetic number, because the mean of its divisors is an integer number (1084720).

Almost surely, 2^13956397 is an apocalyptic number.

It is an amenable number.

13956397 is a deficient number, since it is larger than the sum of its proper divisors (3399123).

13956397 is a wasteful number, since it uses less digits than its factorization.

13956397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612.

The product of its digits is 153090, while the sum is 43.

The square root of 13956397 is about 3735.8261469185. The cubic root of 13956397 is about 240.7637532683.

The spelling of 13956397 in words is "thirteen million, nine hundred fifty-six thousand, three hundred ninety-seven".