13925709 has 16 divisors (see below), whose sum is σ = 23578240. Its totient is φ = 7957440.

The previous prime is 13925701. The next prime is 13925753. The reversal of 13925709 is 90752931.

It is not a de Polignac number, because 13925709 - 2³ = 13925701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13925701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36652 + ... + 37029.

It is an arithmetic number, because the mean of its divisors is an integer number (1473640).

Almost surely, 2^13925709 is an apocalyptic number.

It is an amenable number.

13925709 is a deficient number, since it is larger than the sum of its proper divisors (9652531).

13925709 is an equidigital number, since it uses as much as digits as its factorization.

13925709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73697 (or 73691 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 13925709 is about 3731.7166291132. The cubic root of 13925709 is about 240.5871561107.

The spelling of 13925709 in words is "thirteen million, nine hundred twenty-five thousand, seven hundred nine".