22263749 has 2 divisors, whose sum is σ = 22263750. Its totient is φ = 22263748.

The previous prime is 22263737. The next prime is 22263767. The reversal of 22263749 is 94736222.

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., 22259524 + 4225 = 4718^2 + 65^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22263749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22263049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11131874 + 11131875.

It is an arithmetic number, because the mean of its divisors is an integer number (11131875).

Almost surely, 2^22263749 is an apocalyptic number.

It is an amenable number.

22263749 is a deficient number, since it is larger than the sum of its proper divisors (1).

22263749 is an equidigital number, since it uses as much as digits as its factorization.

22263749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 22263749 is about 4718.4477320407. The cubic root of 22263749 is about 281.3192379989.

The spelling of 22263749 in words is "twenty-two million, two hundred sixty-three thousand, seven hundred forty-nine".