40191984 has 80 divisors (see below), whose sum is σ = 131856640. Its totient is φ = 11482560.

The previous prime is 40191937. The next prime is 40192037. The reversal of 40191984 is 48919104.

40191984 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 (36).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3622 + ... + 9669.

It is an arithmetic number, because the mean of its divisors is an integer number (1648208).

Almost surely, 2^40191984 is an apocalyptic number.

It is an amenable number.

40191984 is an abundant number, since it is smaller than the sum of its proper divisors (91664656).

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

40191984 is a wasteful number, since it uses less digits than its factorization.

40191984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13315 (or 13303 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 40191984 is about 6339.7148200846. The cubic root of 40191984 is about 342.5414630038.

The spelling of 40191984 in words is "forty million, one hundred ninety-one thousand, nine hundred eighty-four".