3892005 has 24 divisors (see below), whose sum is σ = 7266168. Its totient is φ = 1915776.

The previous prime is 3892001. The next prime is 3892027. The reversal of 3892005 is 5002983.

It can be written as a sum of positive squares in 4 ways, for example, as 136161 + 3755844 = 369^2 + 1938^2 .

It is not a de Polignac number, because 3892005 - 2² = 3892001 is a prime.

It is an Ulam number.

3892005 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3892005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3892001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2742 + ... + 3911.

It is an arithmetic number, because the mean of its divisors is an integer number (302757).

Almost surely, 2^3892005 is an apocalyptic number.

It is an amenable number.

3892005 is a deficient number, since it is larger than the sum of its proper divisors (3374163).

3892005 is a wasteful number, since it uses less digits than its factorization.

3892005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6677 (or 6674 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 3892005 is about 1972.8165145294. The cubic root of 3892005 is about 157.2984572501.

Adding to 3892005 its reverse (5002983), we get a palindrome (8894988).

The spelling of 3892005 in words is "three million, eight hundred ninety-two thousand, five".