422590249 has 9 divisors (see below), whose sum is σ = 430910181. Its totient is φ = 414429120.

The previous prime is 422590243. The next prime is 422590277. The reversal of 422590249 is 942095224.

The square root of 422590249 is 20557.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 235776025 + 186814224 = 15355^2 + 13668^2 .

It is not a de Polignac number, because 422590249 - 2⁷ = 422590121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422590243) 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 in 8 ways as a sum of consecutive naturals, for example, 1253809 + ... + 1254145.

It is an arithmetic number, because the mean of its divisors is an integer number (47878909).

Almost surely, 2^422590249 is an apocalyptic number.

422590249 is the 20557-th square number.

422590249 is the 10279-th centered octagonal number.

It is an amenable number.

422590249 is a deficient number, since it is larger than the sum of its proper divisors (8319932).

422590249 is an frugal number, since it uses more digits than its factorization.

422590249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The cubic root of 422590249 is about 750.4236119514.

The spelling of 422590249 in words is "four hundred twenty-two million, five hundred ninety thousand, two hundred forty-nine".