13908291 has 8 divisors (see below), whose sum is σ = 18714960. Its totient is φ = 9186912.

The previous prime is 13908283. The next prime is 13908299. The reversal of 13908291 is 19280931.

It is an interprime number because it is at equal distance from previous prime (13908283) and next prime (13908299).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13908291 - 2³ = 13908283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13908299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20940 + ... + 21593.

It is an arithmetic number, because the mean of its divisors is an integer number (2339370).

Almost surely, 2^13908291 is an apocalyptic number.

13908291 is a deficient number, since it is larger than the sum of its proper divisors (4806669).

13908291 is a wasteful number, since it uses less digits than its factorization.

13908291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42645.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 13908291 is about 3729.3821204055. The cubic root of 13908291 is about 240.4868070500.

The spelling of 13908291 in words is "thirteen million, nine hundred eight thousand, two hundred ninety-one".