140044440 has 128 divisors (see below), whose sum is σ = 445824000. Its totient is φ = 35094528.

The previous prime is 140044439. The next prime is 140044469. The reversal of 140044440 is 44440041.

It is a super-2 number, since 2×140044440² = 39224890349827200, 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 31 ways as a sum of consecutive naturals, for example, 544792 + ... + 545048.

It is an arithmetic number, because the mean of its divisors is an integer number (3483000).

Almost surely, 2^140044440 is an apocalyptic number.

140044440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140044440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222912000).

140044440 is an abundant number, since it is smaller than the sum of its proper divisors (305779560).

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

140044440 is a wasteful number, since it uses less digits than its factorization.

140044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 140044440 is about 11834.0373499495. The cubic root of 140044440 is about 519.3043459056.

Adding to 140044440 its reverse (44440041), we get a palindrome (184484481).

The spelling of 140044440 in words is "one hundred forty million, forty-four thousand, four hundred forty".