3925985 has 16 divisors (see below), whose sum is σ = 5619456. Its totient is φ = 2574528.

The previous prime is 3925981. The next prime is 3925993. The reversal of 3925985 is 5895293.

It is not a de Polignac number, because 3925985 - 2² = 3925981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3925981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1634 + ... + 3243.

It is an arithmetic number, because the mean of its divisors is an integer number (351216).

Almost surely, 2^3925985 is an apocalyptic number.

3925985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3925985 is a deficient number, since it is larger than the sum of its proper divisors (1693471).

3925985 is a wasteful number, since it uses less digits than its factorization.

3925985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912.

The product of its digits is 97200, while the sum is 41.

The square root of 3925985 is about 1981.4098515956. The cubic root of 3925985 is about 157.7549076191.

The spelling of 3925985 in words is "three million, nine hundred twenty-five thousand, nine hundred eighty-five".