422749 has 2 divisors, whose sum is σ = 422750. Its totient is φ = 422748.

The previous prime is 422711. The next prime is 422753. The reversal of 422749 is 947224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 416025 + 6724 = 645^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 422749 - 2⁷ = 422621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422759) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211374 + 211375.

It is an arithmetic number, because the mean of its divisors is an integer number (211375).

2⁴²²⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

422749 is a deficient number, since it is larger than the sum of its proper divisors (1).

422749 is an equidigital number, since it uses as much as digits as its factorization.

422749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 422749 is about 650.1915102491. The cubic root of 422749 is about 75.0517568674.

The spelling of 422749 in words is "four hundred twenty-two thousand, seven hundred forty-nine".