423944380 has 24 divisors (see below), whose sum is σ = 900290160. Its totient is φ = 167671680.

The previous prime is 423944357. The next prime is 423944383. The reversal of 423944380 is 83449324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423944383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117306 + ... + 120865.

It is an arithmetic number, because the mean of its divisors is an integer number (37512090).

Almost surely, 2^423944380 is an apocalyptic number.

It is an amenable number.

423944380 is an abundant number, since it is smaller than the sum of its proper divisors (476345780).

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

423944380 is a wasteful number, since it uses less digits than its factorization.

423944380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238269 (or 238267 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 423944380 is about 20589.9096646877. The cubic root of 423944380 is about 751.2242996257.

The spelling of 423944380 in words is "four hundred twenty-three million, nine hundred forty-four thousand, three hundred eighty".