22747349 has 2 divisors, whose sum is σ = 22747350. Its totient is φ = 22747348.

The previous prime is 22747337. The next prime is 22747357. The reversal of 22747349 is 94374722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22515025 + 232324 = 4745^2 + 482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22747349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22747379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11373674 + 11373675.

It is an arithmetic number, because the mean of its divisors is an integer number (11373675).

Almost surely, 2^22747349 is an apocalyptic number.

It is an amenable number.

22747349 is a deficient number, since it is larger than the sum of its proper divisors (1).

22747349 is an equidigital number, since it uses as much as digits as its factorization.

22747349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 22747349 is about 4769.4180986783. The cubic root of 22747349 is about 283.3415488583.

The spelling of 22747349 in words is "twenty-two million, seven hundred forty-seven thousand, three hundred forty-nine".