13872401 has 4 divisors (see below), whose sum is σ = 13912500. Its totient is φ = 13832304.

The previous prime is 13872361. The next prime is 13872403. The reversal of 13872401 is 10427831.

13872401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10394176 + 3478225 = 3224^2 + 1865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13872401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13872403) 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, 19526 + ... + 20223.

It is an arithmetic number, because the mean of its divisors is an integer number (3478125).

Almost surely, 2^13872401 is an apocalyptic number.

It is an amenable number.

13872401 is a deficient number, since it is larger than the sum of its proper divisors (40099).

13872401 is an equidigital number, since it uses as much as digits as its factorization.

13872401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40098.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 13872401 is about 3724.5672231818. The cubic root of 13872401 is about 240.2797721177.

The spelling of 13872401 in words is "thirteen million, eight hundred seventy-two thousand, four hundred one".