422391653 has 2 divisors, whose sum is σ = 422391654. Its totient is φ = 422391652.

The previous prime is 422391643. The next prime is 422391661. The reversal of 422391653 is 356193224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385022884 + 37368769 = 19622^2 + 6113^2 .

It is a cyclic number.

It is not a de Polignac number, because 422391653 - 2⁶ = 422391589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422391643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211195826 + 211195827.

It is an arithmetic number, because the mean of its divisors is an integer number (211195827).

Almost surely, 2^422391653 is an apocalyptic number.

It is an amenable number.

422391653 is a deficient number, since it is larger than the sum of its proper divisors (1).

422391653 is an equidigital number, since it uses as much as digits as its factorization.

422391653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 422391653 is about 20552.1690582770. The cubic root of 422391653 is about 750.3060398432.

The spelling of 422391653 in words is "four hundred twenty-two million, three hundred ninety-one thousand, six hundred fifty-three".