3902841 has 12 divisors (see below), whose sum is σ = 5730660. Its totient is φ = 2558880.

The previous prime is 3902839. The next prime is 3902851. The reversal of 3902841 is 1482093.

It can be written as a sum of positive squares in 2 ways, for example, as 308025 + 3594816 = 555^2 + 1896^2 .

It is not a de Polignac number, because 3902841 - 2¹ = 3902839 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

3902841 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3902851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3006 + ... + 4103.

It is an arithmetic number, because the mean of its divisors is an integer number (477555).

Almost surely, 2^3902841 is an apocalyptic number.

It is an amenable number.

3902841 is a deficient number, since it is larger than the sum of its proper divisors (1827819).

3902841 is a wasteful number, since it uses less digits than its factorization.

3902841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7176 (or 7173 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 3902841 is about 1975.5609330011. The cubic root of 3902841 is about 157.4443038139. Note that the first 3 decimals are identical.

The spelling of 3902841 in words is "three million, nine hundred two thousand, eight hundred forty-one".