423710979 has 4 divisors (see below), whose sum is σ = 564947976. Its totient is φ = 282473984.

The previous prime is 423710923. The next prime is 423710993. The reversal of 423710979 is 979017324.

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 423710979 - 2¹⁷ = 423579907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423710979.

It is not an unprimeable number, because it can be changed into a prime (423750979) 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, 70618494 + ... + 70618499.

It is an arithmetic number, because the mean of its divisors is an integer number (141236994).

Almost surely, 2^423710979 is an apocalyptic number.

423710979 is a deficient number, since it is larger than the sum of its proper divisors (141236997).

423710979 is a wasteful number, since it uses less digits than its factorization.

423710979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141236996.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 423710979 is about 20584.2410353163. The cubic root of 423710979 is about 751.0864130712.

The spelling of 423710979 in words is "four hundred twenty-three million, seven hundred ten thousand, nine hundred seventy-nine".