422629 has 4 divisors (see below), whose sum is σ = 427084. Its totient is φ = 418176.

The previous prime is 422627. The next prime is 422657. The reversal of 422629 is 926224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 348100 + 74529 = 590^2 + 273^2 .

It is a cyclic number.

It is not a de Polignac number, because 422629 - 2¹ = 422627 is a prime.

It is a Duffinian number.

422629 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2082 + ... + 2275.

It is an arithmetic number, because the mean of its divisors is an integer number (106771).

2⁴²²⁶²⁹ is an apocalyptic number.

It is an amenable number.

422629 is a deficient number, since it is larger than the sum of its proper divisors (4455).

422629 is an equidigital number, since it uses as much as digits as its factorization.

422629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4454.

The product of its digits is 1728, while the sum is 25.

The square root of 422629 is about 650.0992231960. The cubic root of 422629 is about 75.0446548888.

The spelling of 422629 in words is "four hundred twenty-two thousand, six hundred twenty-nine".