13138407 has 6 divisors (see below), whose sum is σ = 18977712. Its totient is φ = 8758932.

The previous prime is 13138403. The next prime is 13138439. The reversal of 13138407 is 70483131.

It is not a de Polignac number, because 13138407 - 2² = 13138403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 729903 + ... + 729920.

It is an arithmetic number, because the mean of its divisors is an integer number (3162952).

Almost surely, 2^13138407 is an apocalyptic number.

13138407 is a deficient number, since it is larger than the sum of its proper divisors (5839305).

13138407 is a wasteful number, since it uses less digits than its factorization.

13138407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459829 (or 1459826 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13138407 is about 3624.6940560549. The cubic root of 13138407 is about 235.9649893003.

The spelling of 13138407 in words is "thirteen million, one hundred thirty-eight thousand, four hundred seven".