40989888 has 70 divisors (see below), whose sum is σ = 121522236. Its totient is φ = 13661568.

The previous prime is 40989857. The next prime is 40989889. The reversal of 40989888 is 88898904.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (40989889) 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 9 ways as a sum of consecutive naturals, for example, 1231 + ... + 9137.

Almost surely, 2^40989888 is an apocalyptic number.

40989888 is a gapful number since it is divisible by the number (48) 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 40989888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60761118).

40989888 is an abundant number, since it is smaller than the sum of its proper divisors (80532348).

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

40989888 is an equidigital number, since it uses as much as digits as its factorization.

40989888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7931 (or 7912 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 54.

The square root of 40989888 is about 6402.3345742003. The cubic root of 40989888 is about 344.7933734369.

The spelling of 40989888 in words is "forty million, nine hundred eighty-nine thousand, eight hundred eighty-eight".