3989111 has 12 divisors (see below), whose sum is σ = 4718736. Its totient is φ = 3303360.

The previous prime is 3989093. The next prime is 3989119. The reversal of 3989111 is 1119893.

It is not a de Polignac number, because 3989111 - 2¹⁰ = 3988087 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989119) 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, 6431 + ... + 7023.

It is an arithmetic number, because the mean of its divisors is an integer number (393228).

Almost surely, 2^3989111 is an apocalyptic number.

3989111 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3989111 is a deficient number, since it is larger than the sum of its proper divisors (729625).

3989111 is an equidigital number, since it uses as much as digits as its factorization.

3989111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 631 counting only the distinct ones).

The product of its digits is 1944, while the sum is 32.

The square root of 3989111 is about 1997.2758948127. The cubic root of 3989111 is about 158.5959308743.

The spelling of 3989111 in words is "three million, nine hundred eighty-nine thousand, one hundred eleven".