440431000 has 32 divisors (see below), whose sum is σ = 1030610880. Its totient is φ = 176172000.

The previous prime is 440430989. The next prime is 440431027. The reversal of 440431000 is 134044.

It is a super-2 number, since 2×440431000² = 387958931522000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 219216 + ... + 221215.

It is an arithmetic number, because the mean of its divisors is an integer number (32206590).

Almost surely, 2^440431000 is an apocalyptic number.

440431000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440431000 is an abundant number, since it is smaller than the sum of its proper divisors (590179880).

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

440431000 is a wasteful number, since it uses less digits than its factorization.

440431000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440452 (or 440438 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 440431000 is about 20986.4480081790. The cubic root of 440431000 is about 760.8387554280.

Adding to 440431000 its reverse (134044), we get a palindrome (440565044).

The spelling of 440431000 in words is "four hundred forty million, four hundred thirty-one thousand".