4897989 has 20 divisors (see below), whose sum is σ = 7749324. Its totient is φ = 3072384.

The previous prime is 4897973. The next prime is 4897993. The reversal of 4897989 is 9897984.

4897989 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2125764 + 2772225 = 1458^2 + 1665^2 .

It is not a de Polignac number, because 4897989 - 2⁴ = 4897973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4897909) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 402 + ... + 3155.

Almost surely, 2^4897989 is an apocalyptic number.

It is an amenable number.

4897989 is a deficient number, since it is larger than the sum of its proper divisors (2851335).

4897989 is a wasteful number, since it uses less digits than its factorization.

4897989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586 (or 3577 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 4897989 is about 2213.1400769043. The cubic root of 4897989 is about 169.8266861128.

It can be divided in two parts, 4897 and 989, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 4897989 in words is "four million, eight hundred ninety-seven thousand, nine hundred eighty-nine".