40989936 has 120 divisors (see below), whose sum is σ = 119087616. Its totient is φ = 12130560.

The previous prime is 40989931. The next prime is 40989943. The reversal of 40989936 is 63998904.

It is a happy number.

40989936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40989931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 251391 + ... + 251553.

Almost surely, 2^40989936 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 40989936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59543808).

40989936 is an abundant number, since it is smaller than the sum of its proper divisors (78097680).

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

40989936 is a wasteful number, since it uses less digits than its factorization.

40989936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 40989936 is about 6402.3383228317. The cubic root of 40989936 is about 344.7935080235.

The spelling of 40989936 in words is "forty million, nine hundred eighty-nine thousand, nine hundred thirty-six".