3989312 has 28 divisors (see below), whose sum is σ = 8022336. Its totient is φ = 1968000.

The previous prime is 3989311. The next prime is 3989317. The reversal of 3989312 is 2139893.

It is a super-2 number, since 2×3989312² = 31829220466688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4937 + ... + 5687.

It is an arithmetic number, because the mean of its divisors is an integer number (286512).

Almost surely, 2^3989312 is an apocalyptic number.

3989312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3989312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4011168).

3989312 is an abundant number, since it is smaller than the sum of its proper divisors (4033024).

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

3989312 is an equidigital number, since it uses as much as digits as its factorization.

3989312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846 (or 836 counting only the distinct ones).

The product of its digits is 11664, while the sum is 35.

The square root of 3989312 is about 1997.3262127154. The cubic root of 3989312 is about 158.5985945627.

The spelling of 3989312 in words is "three million, nine hundred eighty-nine thousand, three hundred twelve".