4091942985 has 32 divisors (see below), whose sum is σ = 7071052800. Its totient is φ = 2008689408.

The previous prime is 4091942983. The next prime is 4091943001. The reversal of 4091942985 is 5892491904.

4091942985 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4091942985 - 2¹ = 4091942983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4091942983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37992 + ... + 98118.

It is an arithmetic number, because the mean of its divisors is an integer number (220970400).

Almost surely, 2^4091942985 is an apocalyptic number.

It is an amenable number.

4091942985 is a deficient number, since it is larger than the sum of its proper divisors (2979109815).

4091942985 is a wasteful number, since it uses less digits than its factorization.

4091942985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60497.

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 4091942985 is about 63968.2967179837. The cubic root of 4091942985 is about 1599.4715683327.

The spelling of 4091942985 in words is "four billion, ninety-one million, nine hundred forty-two thousand, nine hundred eighty-five".