40782989 has 8 divisors (see below), whose sum is σ = 44040192. Its totient is φ = 37542960.

The previous prime is 40782977. The next prime is 40782997. The reversal of 40782989 is 98928704.

40782989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-40782989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40782919) 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 7 ways as a sum of consecutive naturals, for example, 884 + ... + 9074.

It is an arithmetic number, because the mean of its divisors is an integer number (5505024).

Almost surely, 2^40782989 is an apocalyptic number.

It is an amenable number.

40782989 is a deficient number, since it is larger than the sum of its proper divisors (3257203).

40782989 is a wasteful number, since it uses less digits than its factorization.

40782989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8587.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 40782989 is about 6386.1560425658. The cubic root of 40782989 is about 344.2122726498.

The spelling of 40782989 in words is "forty million, seven hundred eighty-two thousand, nine hundred eighty-nine".