422153729 has 2 divisors, whose sum is σ = 422153730. Its totient is φ = 422153728.

The previous prime is 422153713. The next prime is 422153731. The reversal of 422153729 is 927351224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410265025 + 11888704 = 20255^2 + 3448^2 .

It is a cyclic number.

It is not a de Polignac number, because 422153729 - 2⁴ = 422153713 is a prime.

Together with 422153731, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (422155729) 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 as a sum of consecutive naturals, namely, 211076864 + 211076865.

It is an arithmetic number, because the mean of its divisors is an integer number (211076865).

Almost surely, 2^422153729 is an apocalyptic number.

It is an amenable number.

422153729 is a deficient number, since it is larger than the sum of its proper divisors (1).

422153729 is an equidigital number, since it uses as much as digits as its factorization.

422153729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 422153729 is about 20546.3799487890. The cubic root of 422153729 is about 750.1651363780.

The spelling of 422153729 in words is "four hundred twenty-two million, one hundred fifty-three thousand, seven hundred twenty-nine".