4086989 has 8 divisors (see below), whose sum is σ = 4237920. Its totient is φ = 3938896.

The previous prime is 4086967. The next prime is 4086997. The reversal of 4086989 is 9896804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4086989 is a prime.

It is a super-2 number, since 2×4086989² = 33406958172242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4086949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2474 + ... + 3780.

It is an arithmetic number, because the mean of its divisors is an integer number (529740).

Almost surely, 2^4086989 is an apocalyptic number.

It is an amenable number.

4086989 is a deficient number, since it is larger than the sum of its proper divisors (150931).

4086989 is a wasteful number, since it uses less digits than its factorization.

4086989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 4086989 is about 2021.6302827174. The cubic root of 4086989 is about 159.8825831249.

The spelling of 4086989 in words is "four million, eighty-six thousand, nine hundred eighty-nine".