423491306 has 16 divisors (see below), whose sum is σ = 739684224. Its totient is φ = 178071504.

The previous prime is 423491251. The next prime is 423491309. The reversal of 423491306 is 603194324.

It is not an unprimeable number, because it can be changed into a prime (423491309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284630 + ... + 286113.

It is an arithmetic number, because the mean of its divisors is an integer number (46230264).

Almost surely, 2^423491306 is an apocalyptic number.

423491306 is a deficient number, since it is larger than the sum of its proper divisors (316192918).

423491306 is a wasteful number, since it uses less digits than its factorization.

423491306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570805.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 423491306 is about 20578.9043926055. The cubic root of 423491306 is about 750.9565903574.

The spelling of 423491306 in words is "four hundred twenty-three million, four hundred ninety-one thousand, three hundred six".