13750139 has 4 divisors (see below), whose sum is σ = 14807856. Its totient is φ = 12692424.

The previous prime is 13750133. The next prime is 13750141. The reversal of 13750139 is 93105731.

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 13750139 - 2⁴ = 13750123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13750133) 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, 528839 + ... + 528864.

It is an arithmetic number, because the mean of its divisors is an integer number (3701964).

Almost surely, 2^13750139 is an apocalyptic number.

13750139 is a deficient number, since it is larger than the sum of its proper divisors (1057717).

13750139 is a wasteful number, since it uses less digits than its factorization.

13750139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057716.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 13750139 is about 3708.1179862566. The cubic root of 13750139 is about 239.5718001321.

The spelling of 13750139 in words is "thirteen million, seven hundred fifty thousand, one hundred thirty-nine".