423823239 has 32 divisors (see below), whose sum is σ = 721290240. Its totient is φ = 240934176.

The previous prime is 423823217. The next prime is 423823249. The reversal of 423823239 is 932328324.

423823239 is a `hidden beast` number, since 42 + 382 + 3 + 239 = 666.

It is not a de Polignac number, because 423823239 - 2⁵ = 423823207 is a prime.

It is a super-2 number, since 2×423823239² = 359252275832902242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423823249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31542 + ... + 42924.

It is an arithmetic number, because the mean of its divisors is an integer number (22540320).

Almost surely, 2^423823239 is an apocalyptic number.

423823239 is a deficient number, since it is larger than the sum of its proper divisors (297467001).

423823239 is a wasteful number, since it uses less digits than its factorization.

423823239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11596 (or 11590 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 423823239 is about 20586.9676980365. The cubic root of 423823239 is about 751.1527393483.

The spelling of 423823239 in words is "four hundred twenty-three million, eight hundred twenty-three thousand, two hundred thirty-nine".