40984440 has 128 divisors (see below), whose sum is σ = 142248960. Its totient is φ = 9252864.

The previous prime is 40984439. The next prime is 40984451. The reversal of 40984440 is 4448904.

It is a super-2 number, since 2×40984440² = 3359448644227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81229 + ... + 81731.

It is an arithmetic number, because the mean of its divisors is an integer number (1111320).

Almost surely, 2^40984440 is an apocalyptic number.

40984440 is a gapful number since it is divisible by the number (40) 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 40984440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71124480).

40984440 is an abundant number, since it is smaller than the sum of its proper divisors (101264520).

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

40984440 is a wasteful number, since it uses less digits than its factorization.

40984440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 40984440 is about 6401.9090902636. The cubic root of 40984440 is about 344.7780971690.

The spelling of 40984440 in words is "forty million, nine hundred eighty-four thousand, four hundred forty".