13883865 has 16 divisors (see below), whose sum is σ = 22266816. Its totient is φ = 7387200.

The previous prime is 13883861. The next prime is 13883867. The reversal of 13883865 is 56838831.

It is not a de Polignac number, because 13883865 - 2² = 13883861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13883861) 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, 7755 + ... + 9375.

It is an arithmetic number, because the mean of its divisors is an integer number (1391676).

Almost surely, 2^13883865 is an apocalyptic number.

13883865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13883865 is a deficient number, since it is larger than the sum of its proper divisors (8382951).

13883865 is a wasteful number, since it uses less digits than its factorization.

13883865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200.

The product of its digits is 138240, while the sum is 42.

The square root of 13883865 is about 3726.1058761125. The cubic root of 13883865 is about 240.3459420829.

It can be divided in two parts, 1388 and 3865, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 13883865 in words is "thirteen million, eight hundred eighty-three thousand, eight hundred sixty-five".