13872129 has 8 divisors (see below), whose sum is σ = 18545280. Its totient is φ = 9223536.

The previous prime is 13872113. The next prime is 13872137. The reversal of 13872129 is 92127831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13872129 - 2⁴ = 13872113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13872129.

It is not an unprimeable number, because it can be changed into a prime (13872169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4777 + ... + 7110.

It is an arithmetic number, because the mean of its divisors is an integer number (2318160).

Almost surely, 2^13872129 is an apocalyptic number.

It is an amenable number.

13872129 is a deficient number, since it is larger than the sum of its proper divisors (4673151).

13872129 is a wasteful number, since it uses less digits than its factorization.

13872129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12279.

The product of its digits is 6048, while the sum is 33.

The square root of 13872129 is about 3724.5307086934. The cubic root of 13872129 is about 240.2782016968.

The spelling of 13872129 in words is "thirteen million, eight hundred seventy-two thousand, one hundred twenty-nine".