922640549 has 2 divisors, whose sum is σ = 922640550. Its totient is φ = 922640548.

The previous prime is 922640479. The next prime is 922640573. The reversal of 922640549 is 945046229.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 533841025 + 388799524 = 23105^2 + 19718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-922640549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (922640599) 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, 461320274 + 461320275.

It is an arithmetic number, because the mean of its divisors is an integer number (461320275).

Almost surely, 2^922640549 is an apocalyptic number.

It is an amenable number.

922640549 is a deficient number, since it is larger than the sum of its proper divisors (1).

922640549 is an equidigital number, since it uses as much as digits as its factorization.

922640549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 922640549 is about 30374.9987489712. The cubic root of 922640549 is about 973.5184332272.

The spelling of 922640549 in words is "nine hundred twenty-two million, six hundred forty thousand, five hundred forty-nine".