423633971 has 4 divisors (see below), whose sum is σ = 423684000. Its totient is φ = 423583944.

The previous prime is 423633961. The next prime is 423634007. The reversal of 423633971 is 179336324.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 423633971 - 2⁶ = 423633907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423633911) 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, 8816 + ... + 30413.

It is an arithmetic number, because the mean of its divisors is an integer number (105921000).

Almost surely, 2^423633971 is an apocalyptic number.

423633971 is a deficient number, since it is larger than the sum of its proper divisors (50029).

423633971 is a wasteful number, since it uses less digits than its factorization.

423633971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50028.

The product of its digits is 81648, while the sum is 38.

The square root of 423633971 is about 20582.3703931301. The cubic root of 423633971 is about 751.0409078646.

The spelling of 423633971 in words is "four hundred twenty-three million, six hundred thirty-three thousand, nine hundred seventy-one".