423990824 has 16 divisors (see below), whose sum is σ = 800320500. Its totient is φ = 210572032.

The previous prime is 423990823. The next prime is 423990851. The reversal of 423990824 is 428099324.

It can be written as a sum of positive squares in 2 ways, for example, as 423618724 + 372100 = 20582^2 + 610^2 .

It is not an unprimeable number, because it can be changed into a prime (423990823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176657 + ... + 179040.

Almost surely, 2^423990824 is an apocalyptic number.

It is an amenable number.

423990824 is a deficient number, since it is larger than the sum of its proper divisors (376329676).

423990824 is a wasteful number, since it uses less digits than its factorization.

423990824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355852 (or 355848 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 423990824 is about 20591.0374677917. The cubic root of 423990824 is about 751.2517313589.

The spelling of 423990824 in words is "four hundred twenty-three million, nine hundred ninety thousand, eight hundred twenty-four".