4323423440 has 40 divisors (see below), whose sum is σ = 11487955200. Its totient is φ = 1482316416.

The previous prime is 4323423439. The next prime is 4323423487. The reversal of 4323423440 is 443243234.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3859640 + ... + 3860759.

It is an arithmetic number, because the mean of its divisors is an integer number (287198880).

Almost surely, 2^4323423440 is an apocalyptic number.

4323423440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4323423440 is an abundant number, since it is smaller than the sum of its proper divisors (7164531760).

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

4323423440 is a wasteful number, since it uses less digits than its factorization.

4323423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720419 (or 7720413 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 29.

The square root of 4323423440 is about 65752.7447335851. The cubic root of 4323423440 is about 1629.0806714492.

Adding to 4323423440 its reverse (443243234), we get a palindrome (4766666674).

The spelling of 4323423440 in words is "four billion, three hundred twenty-three million, four hundred twenty-three thousand, four hundred forty".