423790238 has 8 divisors (see below), whose sum is σ = 635916432. Its totient is φ = 211818096.

The previous prime is 423790217. The next prime is 423790247. The reversal of 423790238 is 832097324.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 31370 + ... + 42797.

It is an arithmetic number, because the mean of its divisors is an integer number (79489554).

Almost surely, 2^423790238 is an apocalyptic number.

423790238 is a deficient number, since it is larger than the sum of its proper divisors (212126194).

423790238 is a wasteful number, since it uses less digits than its factorization.

423790238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77026.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 423790238 is about 20586.1661802289. The cubic root of 423790238 is about 751.1332426708.

The spelling of 423790238 in words is "four hundred twenty-three million, seven hundred ninety thousand, two hundred thirty-eight".