440430988 has 12 divisors (see below), whose sum is σ = 783818280. Its totient is φ = 216482912.

The previous prime is 440430961. The next prime is 440430989. The reversal of 440430988 is 889034044.

It is a super-2 number, since 2×440430988² = 387958910381312288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 440430988.

It is not an unprimeable number, because it can be changed into a prime (440430989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932881 + ... + 933352.

It is an arithmetic number, because the mean of its divisors is an integer number (65318190).

Almost surely, 2^440430988 is an apocalyptic number.

It is an amenable number.

440430988 is a deficient number, since it is larger than the sum of its proper divisors (343387292).

440430988 is a wasteful number, since it uses less digits than its factorization.

440430988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866296 (or 1866294 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 440430988 is about 20986.4477222802. The cubic root of 440430988 is about 760.8387485180.

The spelling of 440430988 in words is "four hundred forty million, four hundred thirty thousand, nine hundred eighty-eight".