13872417 has 16 divisors (see below), whose sum is σ = 20220480. Its totient is φ = 8407872.

The previous prime is 13872403. The next prime is 13872421. The reversal of 13872417 is 71427831.

It is a happy number.

13872417 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13872417 - 2¹⁰ = 13871393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13872457) 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, 42 + ... + 5267.

It is an arithmetic number, because the mean of its divisors is an integer number (1263780).

Almost surely, 2^13872417 is an apocalyptic number.

It is an amenable number.

13872417 is a deficient number, since it is larger than the sum of its proper divisors (6348063).

13872417 is a wasteful number, since it uses less digits than its factorization.

13872417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392.

The product of its digits is 9408, while the sum is 33.

The square root of 13872417 is about 3724.5693710817. The cubic root of 13872417 is about 240.2798644948.

The spelling of 13872417 in words is "thirteen million, eight hundred seventy-two thousand, four hundred seventeen".