22940987 has 2 divisors, whose sum is σ = 22940988. Its totient is φ = 22940986.

The previous prime is 22940971. The next prime is 22940989. The reversal of 22940987 is 78904922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22940987 - 2⁴ = 22940971 is a prime.

Together with 22940989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22940989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11470493 + 11470494.

It is an arithmetic number, because the mean of its divisors is an integer number (11470494).

Almost surely, 2^22940987 is an apocalyptic number.

22940987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22940987 is an equidigital number, since it uses as much as digits as its factorization.

22940987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 22940987 is about 4789.6750411693. The cubic root of 22940987 is about 284.1432648529.

The spelling of 22940987 in words is "twenty-two million, nine hundred forty thousand, nine hundred eighty-seven".