13889086 has 16 divisors (see below), whose sum is σ = 22057200. Its totient is φ = 6547968.

The previous prime is 13889081. The next prime is 13889089. The reversal of 13889086 is 68098831.

13889086 = 678² + 679² + ... + 706².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a pancake number, because a pancake can be divided into 13889086 parts by 5270 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13889081) 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, 291 + ... + 5278.

It is an arithmetic number, because the mean of its divisors is an integer number (1378575).

Almost surely, 2^13889086 is an apocalyptic number.

13889086 is a deficient number, since it is larger than the sum of its proper divisors (8168114).

13889086 is a wasteful number, since it uses less digits than its factorization.

13889086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 13889086 is about 3726.8064076364. The cubic root of 13889086 is about 240.3760655128.

The spelling of 13889086 in words is "thirteen million, eight hundred eighty-nine thousand, eighty-six".