422658981 has 24 divisors (see below), whose sum is σ = 656083584. Its totient is φ = 261233280.

The previous prime is 422658959. The next prime is 422658989. The reversal of 422658981 is 189856224.

422658981 is a `hidden beast` number, since 42 + 26 + 589 + 8 + 1 = 666.

It is not a de Polignac number, because 422658981 - 2⁹ = 422658469 is a prime.

It is a super-2 number, since 2×422658981² = 357281228439916722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422658989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10365 + ... + 30866.

It is an arithmetic number, because the mean of its divisors is an integer number (27336816).

Almost surely, 2^422658981 is an apocalyptic number.

It is an amenable number.

422658981 is a deficient number, since it is larger than the sum of its proper divisors (233424603).

422658981 is a wasteful number, since it uses less digits than its factorization.

422658981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41321 (or 41318 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 422658981 is about 20558.6716740163. The cubic root of 422658981 is about 750.4642938490.

The spelling of 422658981 in words is "four hundred twenty-two million, six hundred fifty-eight thousand, nine hundred eighty-one".