3902871 has 16 divisors (see below), whose sum is σ = 6109184. Its totient is φ = 2169504.

The previous prime is 3902861. The next prime is 3902879. The reversal of 3902871 is 1782093.

It is a happy number.

It is not a de Polignac number, because 3902871 - 2⁵ = 3902839 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3902879) 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, 1735 + ... + 3288.

It is an arithmetic number, because the mean of its divisors is an integer number (381824).

Almost surely, 2^3902871 is an apocalyptic number.

3902871 is a deficient number, since it is larger than the sum of its proper divisors (2206313).

3902871 is a wasteful number, since it uses less digits than its factorization.

3902871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 3902871 is about 1975.5685257667. The cubic root of 3902871 is about 157.4447072223. Note that the first 3 decimals are identical.

The spelling of 3902871 in words is "three million, nine hundred two thousand, eight hundred seventy-one".