13958397 has 24 divisors (see below), whose sum is σ = 20791680. Its totient is φ = 9020160.

The previous prime is 13958393. The next prime is 13958419. The reversal of 13958397 is 79385931.

It is a happy number.

It is not a de Polignac number, because 13958397 - 2² = 13958393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13958393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51372 + ... + 51642.

It is an arithmetic number, because the mean of its divisors is an integer number (866320).

Almost surely, 2^13958397 is an apocalyptic number.

It is an amenable number.

13958397 is a deficient number, since it is larger than the sum of its proper divisors (6833283).

13958397 is a wasteful number, since it uses less digits than its factorization.

13958397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 430 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 13958397 is about 3736.0938157386. The cubic root of 13958397 is about 240.7752534788.

The spelling of 13958397 in words is "thirteen million, nine hundred fifty-eight thousand, three hundred ninety-seven".