422739547 has 2 divisors, whose sum is σ = 422739548. Its totient is φ = 422739546.

The previous prime is 422739533. The next prime is 422739599. The reversal of 422739547 is 745937224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422739547 - 2¹¹ = 422737499 is a prime.

It is not a weakly prime, because it can be changed into another prime (422739847) 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, 211369773 + 211369774.

It is an arithmetic number, because the mean of its divisors is an integer number (211369774).

Almost surely, 2^422739547 is an apocalyptic number.

422739547 is a deficient number, since it is larger than the sum of its proper divisors (1).

422739547 is an equidigital number, since it uses as much as digits as its factorization.

422739547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 43.

The square root of 422739547 is about 20560.6309971265. The cubic root of 422739547 is about 750.5119745780.

The spelling of 422739547 in words is "four hundred twenty-two million, seven hundred thirty-nine thousand, five hundred forty-seven".