22479042749 has 2 divisors, whose sum is σ = 22479042750. Its totient is φ = 22479042748.

The previous prime is 22479042721. The next prime is 22479042853. The reversal of 22479042749 is 94724097422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21317460025 + 1161582724 = 146005^2 + 34082^2 .

It is a cyclic number.

It is not a de Polignac number, because 22479042749 - 2²⁰ = 22477994173 is a prime.

It is a super-2 number, since 2×22479042749² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22479042697 and 22479042706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22479047749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11239521374 + 11239521375.

It is an arithmetic number, because the mean of its divisors is an integer number (11239521375).

Almost surely, 2^22479042749 is an apocalyptic number.

It is an amenable number.

22479042749 is a deficient number, since it is larger than the sum of its proper divisors (1).

22479042749 is an equidigital number, since it uses as much as digits as its factorization.

22479042749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 22479042749 in words is "twenty-two billion, four hundred seventy-nine million, forty-two thousand, seven hundred forty-nine".