3989118 has 64 divisors (see below), whose sum is σ = 9980928. Its totient is φ = 1036800.

The previous prime is 3989093. The next prime is 3989119. The reversal of 3989118 is 8119893.

It is a happy number.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 26343 + ... + 26493.

It is an arithmetic number, because the mean of its divisors is an integer number (155952).

Almost surely, 2^3989118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3989118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4990464).

3989118 is an abundant number, since it is smaller than the sum of its proper divisors (5991810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3989118 is a wasteful number, since it uses less digits than its factorization.

3989118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217.

The product of its digits is 15552, while the sum is 39.

The square root of 3989118 is about 1997.2776471988. The cubic root of 3989118 is about 158.5960236410.

It can be divided in two parts, 3 and 989118, that added together give a triangular number (989121 = T₁₄₀₆).

The spelling of 3989118 in words is "three million, nine hundred eighty-nine thousand, one hundred eighteen".