423445930 has 8 divisors (see below), whose sum is σ = 762202692. Its totient is φ = 169378368.

The previous prime is 423445921. The next prime is 423445933. The reversal of 423445930 is 39544324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 419717169 + 3728761 = 20487^2 + 1931^2 .

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

It is not an unprimeable number, because it can be changed into a prime (423445933) 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, 21172287 + ... + 21172306.

Almost surely, 2^423445930 is an apocalyptic number.

423445930 is a deficient number, since it is larger than the sum of its proper divisors (338756762).

423445930 is a wasteful number, since it uses less digits than its factorization.

423445930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42344600.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 423445930 is about 20577.8018748359. The cubic root of 423445930 is about 750.9297683795.

The spelling of 423445930 in words is "four hundred twenty-three million, four hundred forty-five thousand, nine hundred thirty".