3989900 has 36 divisors (see below), whose sum is σ = 9171288. Its totient is φ = 1501440.

The previous prime is 3989897. The next prime is 3989903. The reversal of 3989900 is 99893.

3989900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3989897) and next prime (3989903).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3989903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 527 + ... + 2873.

It is an arithmetic number, because the mean of its divisors is an integer number (254758).

Almost surely, 2^3989900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3989900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4585644).

3989900 is an abundant number, since it is smaller than the sum of its proper divisors (5181388).

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

3989900 is a wasteful number, since it uses less digits than its factorization.

3989900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378 (or 2371 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 3989900 is about 1997.4734040783. The cubic root of 3989900 is about 158.6063863317.

The spelling of 3989900 in words is "three million, nine hundred eighty-nine thousand, nine hundred".