22977887 has 2 divisors, whose sum is σ = 22977888. Its totient is φ = 22977886.

The previous prime is 22977881. The next prime is 22977901. The reversal of 22977887 is 78877922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22977887 - 2¹² = 22973791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22977881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11488943 + 11488944.

It is an arithmetic number, because the mean of its divisors is an integer number (11488944).

Almost surely, 2^22977887 is an apocalyptic number.

22977887 is a deficient number, since it is larger than the sum of its proper divisors (1).

22977887 is an equidigital number, since it uses as much as digits as its factorization.

22977887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 50.

The square root of 22977887 is about 4793.5255292947. The cubic root of 22977887 is about 284.2955290069.

The spelling of 22977887 in words is "twenty-two million, nine hundred seventy-seven thousand, eight hundred eighty-seven".