423823238 has 4 divisors (see below), whose sum is σ = 635734860. Its totient is φ = 211911618.

The previous prime is 423823217. The next prime is 423823249. The reversal of 423823238 is 832328324.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×423823238² = 359252274137609288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423823198 and 423823207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105955808 + ... + 105955811.

It is an arithmetic number, because the mean of its divisors is an integer number (158933715).

Almost surely, 2^423823238 is an apocalyptic number.

423823238 is a deficient number, since it is larger than the sum of its proper divisors (211911622).

423823238 is a wasteful number, since it uses less digits than its factorization.

423823238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211911621.

The product of its digits is 55296, while the sum is 35.

The square root of 423823238 is about 20586.9676737493. The cubic root of 423823238 is about 751.1527387575.

The spelling of 423823238 in words is "four hundred twenty-three million, eight hundred twenty-three thousand, two hundred thirty-eight".