422439831 has 24 divisors (see below), whose sum is σ = 674792976. Its totient is φ = 252512640.

The previous prime is 422439793. The next prime is 422439859. The reversal of 422439831 is 138934224.

It is not a de Polignac number, because 422439831 - 2²¹ = 420342679 is a prime.

It is a super-2 number, since 2×422439831² = 356910821630617122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422439131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22000 + ... + 36453.

It is an arithmetic number, because the mean of its divisors is an integer number (28116374).

Almost surely, 2^422439831 is an apocalyptic number.

422439831 is a deficient number, since it is larger than the sum of its proper divisors (252353145).

422439831 is a wasteful number, since it uses less digits than its factorization.

422439831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58543 (or 58540 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 422439831 is about 20553.3411152542. The cubic root of 422439831 is about 750.3345653991.

The spelling of 422439831 in words is "four hundred twenty-two million, four hundred thirty-nine thousand, eight hundred thirty-one".