39941895785 has 16 divisors (see below), whose sum is σ = 52296250752. Its totient is φ = 29043830400.

The previous prime is 39941895769. The next prime is 39941895787. The reversal of 39941895785 is 58759814993.

It is a happy number.

It is not a de Polignac number, because 39941895785 - 2⁴ = 39941895769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39941895787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292772 + ... + 406938.

It is an arithmetic number, because the mean of its divisors is an integer number (3268515672).

Almost surely, 2^39941895785 is an apocalyptic number.

It is an amenable number.

39941895785 is a deficient number, since it is larger than the sum of its proper divisors (12354354967).

39941895785 is a wasteful number, since it uses less digits than its factorization.

39941895785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120544.

The product of its digits is 97977600, while the sum is 68.

The spelling of 39941895785 in words is "thirty-nine billion, nine hundred forty-one million, eight hundred ninety-five thousand, seven hundred eighty-five".