13859965 has 16 divisors (see below), whose sum is σ = 19071360. Its totient is φ = 9472320.

The previous prime is 13859933. The next prime is 13859983. The reversal of 13859965 is 56995831.

It is not a de Polignac number, because 13859965 - 2⁵ = 13859933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15706 + ... + 16564.

It is an arithmetic number, because the mean of its divisors is an integer number (1191960).

Almost surely, 2^13859965 is an apocalyptic number.

It is an amenable number.

13859965 is a deficient number, since it is larger than the sum of its proper divisors (5211395).

13859965 is an equidigital number, since it uses as much as digits as its factorization.

13859965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332.

The product of its digits is 291600, while the sum is 46.

The square root of 13859965 is about 3722.8973931603. The cubic root of 13859965 is about 240.2079505540.

The spelling of 13859965 in words is "thirteen million, eight hundred fifty-nine thousand, nine hundred sixty-five".