809940024 has 48 divisors (see below), whose sum is σ = 2203211400. Its totient is φ = 268795584.

The previous prime is 809940013. The next prime is 809940041. The reversal of 809940024 is 420049908.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8074 + ... + 41049.

Almost surely, 2^809940024 is an apocalyptic number.

It is an amenable number.

809940024 is an abundant number, since it is smaller than the sum of its proper divisors (1393271376).

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

809940024 is a wasteful number, since it uses less digits than its factorization.

809940024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49364 (or 49357 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 809940024 is about 28459.4452510937. The cubic root of 809940024 is about 932.1467438878.

The spelling of 809940024 in words is "eight hundred nine million, nine hundred forty thousand, twenty-four".