424322991 has 12 divisors (see below), whose sum is σ = 645169720. Its totient is φ = 267993360.

The previous prime is 424322989. The next prime is 424323007. The reversal of 424322991 is 199223424.

424322991 is a `hidden beast` number, since 424 + 3 + 229 + 9 + 1 = 666.

It is not a de Polignac number, because 424322991 - 2¹ = 424322989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424322191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1240540 + ... + 1240881.

Almost surely, 2^424322991 is an apocalyptic number.

424322991 is a deficient number, since it is larger than the sum of its proper divisors (220846729).

424322991 is a wasteful number, since it uses less digits than its factorization.

424322991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481446 (or 2481443 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 424322991 is about 20599.1017037151. The cubic root of 424322991 is about 751.4478644527.

The spelling of 424322991 in words is "four hundred twenty-four million, three hundred twenty-two thousand, nine hundred ninety-one".