470638923 has 4 divisors (see below), whose sum is σ = 627518568. Its totient is φ = 313759280.

The previous prime is 470638921. The next prime is 470638939. The reversal of 470638923 is 329836074.

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

It is a cyclic number.

It is not a de Polignac number, because 470638923 - 2¹ = 470638921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (470638921) 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 3 ways as a sum of consecutive naturals, for example, 78439818 + ... + 78439823.

It is an arithmetic number, because the mean of its divisors is an integer number (156879642).

Almost surely, 2^470638923 is an apocalyptic number.

470638923 is a deficient number, since it is larger than the sum of its proper divisors (156879645).

470638923 is a wasteful number, since it uses less digits than its factorization.

470638923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156879644.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 470638923 is about 21694.2140443022. The cubic root of 470638923 is about 777.8501632306.

The spelling of 470638923 in words is "four hundred seventy million, six hundred thirty-eight thousand, nine hundred twenty-three".