440023000 has 32 divisors (see below), whose sum is σ = 1029656160. Its totient is φ = 176008800.

The previous prime is 440022983. The next prime is 440023009. The reversal of 440023000 is 320044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440023009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219012 + ... + 221011.

It is an arithmetic number, because the mean of its divisors is an integer number (32176755).

Almost surely, 2^440023000 is an apocalyptic number.

440023000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440023000 is an abundant number, since it is smaller than the sum of its proper divisors (589633160).

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

440023000 is a wasteful number, since it uses less digits than its factorization.

440023000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440044 (or 440030 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 440023000 is about 20976.7251972275. The cubic root of 440023000 is about 760.6037446345.

Adding to 440023000 its reverse (320044), we get a palindrome (440343044).

The spelling of 440023000 in words is "four hundred forty million, twenty-three thousand".