3898989 has 8 divisors (see below), whose sum is σ = 5776320. Its totient is φ = 2599308.

The previous prime is 3898981. The next prime is 3898991. The reversal of 3898989 is 9898983.

It is not a de Polignac number, because 3898989 - 2³ = 3898981 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898981) 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, 72177 + ... + 72230.

It is an arithmetic number, because the mean of its divisors is an integer number (722040).

Almost surely, 2^3898989 is an apocalyptic number.

It is an amenable number.

3898989 is a deficient number, since it is larger than the sum of its proper divisors (1877331).

3898989 is a wasteful number, since it uses less digits than its factorization.

3898989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144416 (or 144410 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 3898989 is about 1974.5857793472. The cubic root of 3898989 is about 157.3924889869.

The spelling of 3898989 in words is "three million, eight hundred ninety-eight thousand, nine hundred eighty-nine".