22790749 has 2 divisors, whose sum is σ = 22790750. Its totient is φ = 22790748.

The previous prime is 22790741. The next prime is 22790777. The reversal of 22790749 is 94709722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22325625 + 465124 = 4725^2 + 682^2 .

It is a cyclic number.

It is not a de Polignac number, because 22790749 - 2³ = 22790741 is a prime.

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22790741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11395374 + 11395375.

It is an arithmetic number, because the mean of its divisors is an integer number (11395375).

Almost surely, 2^22790749 is an apocalyptic number.

It is an amenable number.

22790749 is a deficient number, since it is larger than the sum of its proper divisors (1).

22790749 is an equidigital number, since it uses as much as digits as its factorization.

22790749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 22790749 is about 4773.9657518671. The cubic root of 22790749 is about 283.5216315417.

The spelling of 22790749 in words is "twenty-two million, seven hundred ninety thousand, seven hundred forty-nine".