842509444 has 24 divisors (see below), whose sum is σ = 1739376128. Its totient is φ = 349427520.

The previous prime is 842509433. The next prime is 842509453. The reversal of 842509444 is 444905248.

It is a junction number, because it is equal to n+sod(n) for n = 842509397 and 842509406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484449 + ... + 486184.

Almost surely, 2^842509444 is an apocalyptic number.

It is an amenable number.

842509444 is an abundant number, since it is smaller than the sum of its proper divisors (896866684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842509444 is a wasteful number, since it uses less digits than its factorization.

842509444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970675 (or 970673 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 842509444 is about 29026.0132295153. The cubic root of 842509444 is about 944.4774483794.

The spelling of 842509444 in words is "eight hundred forty-two million, five hundred nine thousand, four hundred forty-four".