40785289 has 4 divisors (see below), whose sum is σ = 40800256. Its totient is φ = 40770324.

The previous prime is 40785263. The next prime is 40785301. The reversal of 40785289 is 98258704.

40785289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40785289 - 2¹¹ = 40783241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40785389) 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 3 ways as a sum of consecutive naturals, for example, 2109 + ... + 9274.

It is an arithmetic number, because the mean of its divisors is an integer number (10200064).

Almost surely, 2^40785289 is an apocalyptic number.

It is an amenable number.

40785289 is a deficient number, since it is larger than the sum of its proper divisors (14967).

40785289 is a wasteful number, since it uses less digits than its factorization.

40785289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14966.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 40785289 is about 6386.3361170549. The cubic root of 40785289 is about 344.2187432671.

The spelling of 40785289 in words is "forty million, seven hundred eighty-five thousand, two hundred eighty-nine".