22839987 has 4 divisors (see below), whose sum is σ = 30453320. Its totient is φ = 15226656.

The previous prime is 22839967. The next prime is 22839991. The reversal of 22839987 is 78993822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22839987 - 2⁸ = 22839731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22839917) 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, 3806662 + ... + 3806667.

It is an arithmetic number, because the mean of its divisors is an integer number (7613330).

Almost surely, 2^22839987 is an apocalyptic number.

22839987 is a deficient number, since it is larger than the sum of its proper divisors (7613333).

22839987 is an equidigital number, since it uses as much as digits as its factorization.

22839987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7613332.

The product of its digits is 435456, while the sum is 48.

The square root of 22839987 is about 4779.1198980565. The cubic root of 22839987 is about 283.7256616487.

The spelling of 22839987 in words is "twenty-two million, eight hundred thirty-nine thousand, nine hundred eighty-seven".