522440939 has 2 divisors, whose sum is σ = 522440940. Its totient is φ = 522440938.

The previous prime is 522440911. The next prime is 522440953. The reversal of 522440939 is 939044225.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522440939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (522440909) 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, 261220469 + 261220470.

It is an arithmetic number, because the mean of its divisors is an integer number (261220470).

Almost surely, 2^522440939 is an apocalyptic number.

522440939 is a deficient number, since it is larger than the sum of its proper divisors (1).

522440939 is an equidigital number, since it uses as much as digits as its factorization.

522440939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 522440939 is about 22856.9669685197. The cubic root of 522440939 is about 805.4014375746.

The spelling of 522440939 in words is "five hundred twenty-two million, four hundred forty thousand, nine hundred thirty-nine".