3868989 has 16 divisors (see below), whose sum is σ = 5491200. Its totient is φ = 2416176.

The previous prime is 3868987. The next prime is 3868999. The reversal of 3868989 is 9898683.

It is not a de Polignac number, because 3868989 - 2¹ = 3868987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3868981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5542 + ... + 6200.

It is an arithmetic number, because the mean of its divisors is an integer number (343200).

Almost surely, 2^3868989 is an apocalyptic number.

It is an amenable number.

3868989 is a deficient number, since it is larger than the sum of its proper divisors (1622211).

3868989 is a wasteful number, since it uses less digits than its factorization.

3868989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784.

The product of its digits is 746496, while the sum is 51.

The square root of 3868989 is about 1966.9745804153. The cubic root of 3868989 is about 156.9877740760.

The spelling of 3868989 in words is "three million, eight hundred sixty-eight thousand, nine hundred eighty-nine".