422153947 has 2 divisors, whose sum is σ = 422153948. Its totient is φ = 422153946.

The previous prime is 422153903. The next prime is 422154011. The reversal of 422153947 is 749351224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422153947 - 2¹⁵ = 422121179 is a prime.

It is not a weakly prime, because it can be changed into another prime (422153047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211076973 + 211076974.

It is an arithmetic number, because the mean of its divisors is an integer number (211076974).

Almost surely, 2^422153947 is an apocalyptic number.

422153947 is a deficient number, since it is larger than the sum of its proper divisors (1).

422153947 is an equidigital number, since it uses as much as digits as its factorization.

422153947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 422153947 is about 20546.3852538591. The cubic root of 422153947 is about 750.1652655063.

The spelling of 422153947 in words is "four hundred twenty-two million, one hundred fifty-three thousand, nine hundred forty-seven".