13822987 has 4 divisors (see below), whose sum is σ = 13833856. Its totient is φ = 13812120.

The previous prime is 13822981. The next prime is 13822997. The reversal of 13822987 is 78922831.

13822987 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13822987 - 2³ = 13822979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13822981) 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, 3228 + ... + 6169.

It is an arithmetic number, because the mean of its divisors is an integer number (3458464).

Almost surely, 2^13822987 is an apocalyptic number.

13822987 is a deficient number, since it is larger than the sum of its proper divisors (10869).

13822987 is an equidigital number, since it uses as much as digits as its factorization.

13822987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10868.

The product of its digits is 48384, while the sum is 40.

The square root of 13822987 is about 3717.9277830534. The cubic root of 13822987 is about 239.9941375883.

The spelling of 13822987 in words is "thirteen million, eight hundred twenty-two thousand, nine hundred eighty-seven".