479138423 has 4 divisors (see below), whose sum is σ = 490824768. Its totient is φ = 467452080.

The previous prime is 479138417. The next prime is 479138483. The reversal of 479138423 is 324831974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324831974 = 2 ⋅162415987.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-479138423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 11686303 = 479138423 / (4 + 7 + 9 + 1 + 3 + 8 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479138483) 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, 5843111 + ... + 5843192.

It is an arithmetic number, because the mean of its divisors is an integer number (122706192).

Almost surely, 2^479138423 is an apocalyptic number.

479138423 is a deficient number, since it is larger than the sum of its proper divisors (11686345).

479138423 is a wasteful number, since it uses less digits than its factorization.

479138423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11686344.

The product of its digits is 145152, while the sum is 41.

The square root of 479138423 is about 21889.2307539575. The cubic root of 479138423 is about 782.5047810070.

The spelling of 479138423 in words is "four hundred seventy-nine million, one hundred thirty-eight thousand, four hundred twenty-three".