22322749 has 2 divisors, whose sum is σ = 22322750. Its totient is φ = 22322748.

The previous prime is 22322747. The next prime is 22322753. The reversal of 22322749 is 94722322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20839225 + 1483524 = 4565^2 + 1218^2 .

It is a cyclic number.

It is not a de Polignac number, because 22322749 - 2¹ = 22322747 is a prime.

It is a super-3 number, since 3×22322749³ (a number of 23 digits) contains 333 as substring.

Together with 22322747, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22322749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22322747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11161374 + 11161375.

It is an arithmetic number, because the mean of its divisors is an integer number (11161375).

Almost surely, 2^22322749 is an apocalyptic number.

It is an amenable number.

22322749 is a deficient number, since it is larger than the sum of its proper divisors (1).

22322749 is an equidigital number, since it uses as much as digits as its factorization.

22322749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 22322749 is about 4724.6956515738. The cubic root of 22322749 is about 281.5675219530.

The spelling of 22322749 in words is "twenty-two million, three hundred twenty-two thousand, seven hundred forty-nine".