3889971 has 8 divisors (see below), whose sum is σ = 5762960. Its totient is φ = 2593296.

The previous prime is 3889969. The next prime is 3889993. The reversal of 3889971 is 1799883.

It is not a de Polignac number, because 3889971 - 2¹ = 3889969 is a prime.

It is a super-3 number, since 3×3889971³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3889901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72010 + ... + 72063.

It is an arithmetic number, because the mean of its divisors is an integer number (720370).

Almost surely, 2^3889971 is an apocalyptic number.

3889971 is a deficient number, since it is larger than the sum of its proper divisors (1872989).

3889971 is a wasteful number, since it uses less digits than its factorization.

3889971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144082 (or 144076 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 3889971 is about 1972.3009405261. The cubic root of 3889971 is about 157.2710505695.

It can be divided in two parts, 38 and 89971, that added together give a palindrome (90009).

The spelling of 3889971 in words is "three million, eight hundred eighty-nine thousand, nine hundred seventy-one".