40869785 has 16 divisors (see below), whose sum is σ = 56650752. Its totient is φ = 27974400.

The previous prime is 40869757. The next prime is 40869791. The reversal of 40869785 is 58796804.

It is not a de Polignac number, because 40869785 - 2⁸ = 40869529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20921 + ... + 22790.

It is an arithmetic number, because the mean of its divisors is an integer number (3540672).

Almost surely, 2^40869785 is an apocalyptic number.

It is an amenable number.

40869785 is a deficient number, since it is larger than the sum of its proper divisors (15780967).

40869785 is a wasteful number, since it uses less digits than its factorization.

40869785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43744.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 40869785 is about 6392.9480679887. The cubic root of 40869785 is about 344.4562884315.

The spelling of 40869785 in words is "forty million, eight hundred sixty-nine thousand, seven hundred eighty-five".