13949157 has 16 divisors (see below), whose sum is σ = 19312128. Its totient is φ = 8949360.

The previous prime is 13949153. The next prime is 13949161. The reversal of 13949157 is 75194931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13949153) and next prime (13949161).

It is not a de Polignac number, because 13949157 - 2² = 13949153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13949153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8398 + ... + 9920.

It is an arithmetic number, because the mean of its divisors is an integer number (1207008).

Almost surely, 2^13949157 is an apocalyptic number.

It is an amenable number.

13949157 is a deficient number, since it is larger than the sum of its proper divisors (5362971).

13949157 is a wasteful number, since it uses less digits than its factorization.

13949157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its digits is 34020, while the sum is 39.

The square root of 13949157 is about 3734.8570253759. The cubic root of 13949157 is about 240.7221133169.

The spelling of 13949157 in words is "thirteen million, nine hundred forty-nine thousand, one hundred fifty-seven".