22406779 has 2 divisors, whose sum is σ = 22406780. Its totient is φ = 22406778.

The previous prime is 22406777. The next prime is 22406851. The reversal of 22406779 is 97760422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22406779 - 2¹ = 22406777 is a prime.

Together with 22406777, 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 (22406771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11203389 + 11203390.

It is an arithmetic number, because the mean of its divisors is an integer number (11203390).

Almost surely, 2^22406779 is an apocalyptic number.

22406779 is a deficient number, since it is larger than the sum of its proper divisors (1).

22406779 is an equidigital number, since it uses as much as digits as its factorization.

22406779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 22406779 is about 4733.5799348907. The cubic root of 22406779 is about 281.9203831038.

The spelling of 22406779 in words is "twenty-two million, four hundred six thousand, seven hundred seventy-nine".