40989824 has 32 divisors (see below), whose sum is σ = 81959040. Its totient is φ = 20419840.

The previous prime is 40989787. The next prime is 40989827. The reversal of 40989824 is 42898904.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (40989827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54797 + ... + 55539.

It is an arithmetic number, because the mean of its divisors is an integer number (2561220).

Almost surely, 2^40989824 is an apocalyptic number.

It is an amenable number.

40989824 is a deficient number, since it is larger than the sum of its proper divisors (40969216).

40989824 is an equidigital number, since it uses as much as digits as its factorization.

40989824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 40989824 is about 6402.3295760215. The cubic root of 40989824 is about 344.7931939879.

The spelling of 40989824 in words is "forty million, nine hundred eighty-nine thousand, eight hundred twenty-four".