423873956 has 24 divisors (see below), whose sum is σ = 810341280. Its totient is φ = 192401600.

The previous prime is 423873953. The next prime is 423873977. The reversal of 423873956 is 659378324.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 423873956.

It is not an unprimeable number, because it can be changed into a prime (423873953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27155 + ... + 39813.

It is an arithmetic number, because the mean of its divisors is an integer number (33764220).

Almost surely, 2^423873956 is an apocalyptic number.

It is an amenable number.

423873956 is a deficient number, since it is larger than the sum of its proper divisors (386467324).

423873956 is a wasteful number, since it uses less digits than its factorization.

423873956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13435 (or 13433 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The square root of 423873956 is about 20588.1994355990. The cubic root of 423873956 is about 751.1827004975.

The spelling of 423873956 in words is "four hundred twenty-three million, eight hundred seventy-three thousand, nine hundred fifty-six".