40444140 has 96 divisors (see below), whose sum is σ = 124540416. Its totient is φ = 9725440.

The previous prime is 40444127. The next prime is 40444147. The reversal of 40444140 is 4144404.

It is not an unprimeable number, because it can be changed into a prime (40444147) 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 31 ways as a sum of consecutive naturals, for example, 153649 + ... + 153911.

It is an arithmetic number, because the mean of its divisors is an integer number (1297296).

Almost surely, 2^40444140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40444140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62270208).

40444140 is an abundant number, since it is smaller than the sum of its proper divisors (84096276).

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

40444140 is a wasteful number, since it uses less digits than its factorization.

40444140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519 (or 517 counting only the distinct ones).

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

The square root of 40444140 is about 6359.5707402308. The cubic root of 40444140 is about 343.2563143500.

Adding to 40444140 its reverse (4144404), we get a palindrome (44588544).

It can be divided in two parts, 404 and 44140, that added together give a palindrome (44544).

The spelling of 40444140 in words is "forty million, four hundred forty-four thousand, one hundred forty".