722445749 has 2 divisors, whose sum is σ = 722445750. Its totient is φ = 722445748.

The previous prime is 722445733. The next prime is 722445769. The reversal of 722445749 is 947544227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 691164100 + 31281649 = 26290^2 + 5593^2 .

It is a cyclic number.

It is not a de Polignac number, because 722445749 - 2⁴ = 722445733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722445769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361222874 + 361222875.

It is an arithmetic number, because the mean of its divisors is an integer number (361222875).

Almost surely, 2^722445749 is an apocalyptic number.

It is an amenable number.

722445749 is a deficient number, since it is larger than the sum of its proper divisors (1).

722445749 is an equidigital number, since it uses as much as digits as its factorization.

722445749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 44.

The square root of 722445749 is about 26878.3509352787. The cubic root of 722445749 is about 897.2946534031.

The spelling of 722445749 in words is "seven hundred twenty-two million, four hundred forty-five thousand, seven hundred forty-nine".