422543439 has 16 divisors (see below), whose sum is σ = 626901600. Its totient is φ = 281285568.

The previous prime is 422543411. The next prime is 422543453. The reversal of 422543439 is 934345224.

It is not a de Polignac number, because 422543439 - 2¹² = 422539343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422543039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8107 + ... + 30179.

It is an arithmetic number, because the mean of its divisors is an integer number (39181350).

Almost surely, 2^422543439 is an apocalyptic number.

422543439 is a deficient number, since it is larger than the sum of its proper divisors (204358161).

422543439 is a wasteful number, since it uses less digits than its factorization.

422543439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22791 (or 22785 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 422543439 is about 20555.8614268534. The cubic root of 422543439 is about 750.3959029777.

The spelling of 422543439 in words is "four hundred twenty-two million, five hundred forty-three thousand, four hundred thirty-nine".