3989658 has 32 divisors (see below), whose sum is σ = 8524800. Its totient is φ = 1241136.

The previous prime is 3989653. The next prime is 3989663. The reversal of 3989658 is 8569893.

3989658 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 (3989653) and next prime (3989663).

It is not an unprimeable number, because it can be changed into a prime (3989651) 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 15 ways as a sum of consecutive naturals, for example, 8785 + ... + 9227.

It is an arithmetic number, because the mean of its divisors is an integer number (266400).

Almost surely, 2^3989658 is an apocalyptic number.

3989658 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3989658 is an abundant number, since it is smaller than the sum of its proper divisors (4535142).

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

3989658 is a wasteful number, since it uses less digits than its factorization.

3989658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its digits is 466560, while the sum is 48.

The square root of 3989658 is about 1997.4128266335. The cubic root of 3989658 is about 158.6031796079.

The spelling of 3989658 in words is "three million, nine hundred eighty-nine thousand, six hundred fifty-eight".