40214440 has 128 divisors (see below), whose sum is σ = 110315520. Its totient is φ = 12902400.

The previous prime is 40214429. The next prime is 40214441. The reversal of 40214440 is 4441204.

It is not an unprimeable number, because it can be changed into a prime (40214441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355824 + ... + 355936.

It is an arithmetic number, because the mean of its divisors is an integer number (861840).

Almost surely, 2^40214440 is an apocalyptic number.

40214440 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 40214440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55157760).

40214440 is an abundant number, since it is smaller than the sum of its proper divisors (70101080).

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

40214440 is a wasteful number, since it uses less digits than its factorization.

40214440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 40214440 is about 6341.4856303551. The cubic root of 40214440 is about 342.6052458630.

Adding to 40214440 its reverse (4441204), we get a palindrome (44655644).

The spelling of 40214440 in words is "forty million, two hundred fourteen thousand, four hundred forty".