440140432 has 20 divisors (see below), whose sum is σ = 872605360. Its totient is φ = 214951968.

The previous prime is 440140429. The next prime is 440140447. The reversal of 440140432 is 234041044.

It is a super-2 number, since 2×440140432² = 387447199762293248, which contains 22 as substring.

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, 319182 + ... + 320557.

It is an arithmetic number, because the mean of its divisors is an integer number (43630268).

Almost surely, 2^440140432 is an apocalyptic number.

It is an amenable number.

440140432 is a deficient number, since it is larger than the sum of its proper divisors (432464928).

440140432 is a wasteful number, since it uses less digits than its factorization.

440140432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639790 (or 639784 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 440140432 is about 20979.5241128106. The cubic root of 440140432 is about 760.6714011542.

Adding to 440140432 its reverse (234041044), we get a palindrome (674181476).

The spelling of 440140432 in words is "four hundred forty million, one hundred forty thousand, four hundred thirty-two".