13909375 has 12 divisors (see below), whose sum is σ = 17389512. Its totient is φ = 11125000.

The previous prime is 13909369. The next prime is 13909391. The reversal of 13909375 is 57390931.

It is not a de Polignac number, because 13909375 - 2³ = 13909367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 900 + ... + 5350.

It is an arithmetic number, because the mean of its divisors is an integer number (1449126).

Almost surely, 2^13909375 is an apocalyptic number.

13909375 is a deficient number, since it is larger than the sum of its proper divisors (3480137).

13909375 is an frugal number, since it uses more digits than its factorization.

13909375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476 (or 4456 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 13909375 is about 3729.5274499593. The cubic root of 13909375 is about 240.4930546646.

The spelling of 13909375 in words is "thirteen million, nine hundred nine thousand, three hundred seventy-five".