22977979 has 4 divisors (see below), whose sum is σ = 22987584. Its totient is φ = 22968376.

The previous prime is 22977959. The next prime is 22978003. The reversal of 22977979 is 97977922.

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 22977979 - 2⁹ = 22977467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22977949) 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 in 3 ways as a sum of consecutive naturals, for example, 1974 + ... + 7060.

It is an arithmetic number, because the mean of its divisors is an integer number (5746896).

Almost surely, 2^22977979 is an apocalyptic number.

22977979 is a deficient number, since it is larger than the sum of its proper divisors (9605).

22977979 is an equidigital number, since it uses as much as digits as its factorization.

22977979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604.

The product of its digits is 1000188, while the sum is 52.

The square root of 22977979 is about 4793.5351255623. The cubic root of 22977979 is about 284.2959084318.

The spelling of 22977979 in words is "twenty-two million, nine hundred seventy-seven thousand, nine hundred seventy-nine".