440134440 has 64 divisors (see below), whose sum is σ = 1377820800. Its totient is φ = 112265472.

The previous prime is 440134423. The next prime is 440134451. The reversal of 440134440 is 44431044.

It is a super-2 number, since 2×440134440² = 387436650548227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 440134440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76975 + ... + 82494.

It is an arithmetic number, because the mean of its divisors is an integer number (21528450).

Almost surely, 2^440134440 is an apocalyptic number.

440134440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440134440 is an abundant number, since it is smaller than the sum of its proper divisors (937686360).

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

440134440 is a wasteful number, since it uses less digits than its factorization.

440134440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159506 (or 159502 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 440134440 is about 20979.3813064161. The cubic root of 440134440 is about 760.6679492531.

Adding to 440134440 its reverse (44431044), we get a palindrome (484565484).

The spelling of 440134440 in words is "four hundred forty million, one hundred thirty-four thousand, four hundred forty".