3925086891 has 16 divisors (see below), whose sum is σ = 5711161728. Its totient is φ = 2378030400.

The previous prime is 3925086887. The next prime is 3925086931. The reversal of 3925086891 is 1986805293.

It is a happy number.

3925086891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3925086891 - 2² = 3925086887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3925086491) by changing a digit.

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, 86511 + ... + 123831.

It is an arithmetic number, because the mean of its divisors is an integer number (356947608).

Almost surely, 2^3925086891 is an apocalyptic number.

3925086891 is a deficient number, since it is larger than the sum of its proper divisors (1786074837).

3925086891 is a wasteful number, since it uses less digits than its factorization.

3925086891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40522.

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

The square root of 3925086891 is about 62650.5138925452. The cubic root of 3925086891 is about 1577.4287735519.

The spelling of 3925086891 in words is "three billion, nine hundred twenty-five million, eighty-six thousand, eight hundred ninety-one".