13925491 has 4 divisors (see below), whose sum is σ = 14093352. Its totient is φ = 13757632.

The previous prime is 13925467. The next prime is 13925531. The reversal of 13925491 is 19452931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13925491 - 2⁵ = 13925459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13925441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83806 + ... + 83971.

It is an arithmetic number, because the mean of its divisors is an integer number (3523338).

Almost surely, 2^13925491 is an apocalyptic number.

13925491 is a deficient number, since it is larger than the sum of its proper divisors (167861).

13925491 is an equidigital number, since it uses as much as digits as its factorization.

13925491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167860.

The product of its digits is 9720, while the sum is 34.

The square root of 13925491 is about 3731.6874199214. The cubic root of 13925491 is about 240.5859006803.

The spelling of 13925491 in words is "thirteen million, nine hundred twenty-five thousand, four hundred ninety-one".