423988772 has 48 divisors (see below), whose sum is σ = 825834240. Its totient is φ = 189568512.

The previous prime is 423988771. The next prime is 423988777. The reversal of 423988772 is 277889324.

It is a self number, because there is not a number n which added to its sum of digits gives 423988772.

It is not an unprimeable number, because it can be changed into a prime (423988771) 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, 106229 + ... + 110147.

It is an arithmetic number, because the mean of its divisors is an integer number (17204880).

Almost surely, 2^423988772 is an apocalyptic number.

It is an amenable number.

423988772 is a deficient number, since it is larger than the sum of its proper divisors (401845468).

423988772 is a wasteful number, since it uses less digits than its factorization.

423988772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020 (or 4018 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 423988772 is about 20590.9876402275. The cubic root of 423988772 is about 751.2505194057.

Adding to 423988772 its product of digits (1354752), we get a palindrome (425343524).

The spelling of 423988772 in words is "four hundred twenty-three million, nine hundred eighty-eight thousand, seven hundred seventy-two".