423491766 has 8 divisors (see below), whose sum is σ = 846983544. Its totient is φ = 141163920.

The previous prime is 423491749. The next prime is 423491807. The reversal of 423491766 is 667194324.

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

423491766 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35290975 + ... + 35290986.

It is an arithmetic number, because the mean of its divisors is an integer number (105872943).

Almost surely, 2^423491766 is an apocalyptic number.

423491766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423491766 is a wasteful number, since it uses less digits than its factorization.

423491766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70581966.

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

The square root of 423491766 is about 20578.9155690964. The cubic root of 423491766 is about 750.9568622559.

The spelling of 423491766 in words is "four hundred twenty-three million, four hundred ninety-one thousand, seven hundred sixty-six".