4788989 has 2 divisors, whose sum is σ = 4788990. Its totient is φ = 4788988.

The previous prime is 4788961. The next prime is 4789003. The reversal of 4788989 is 9898874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4708900 + 80089 = 2170^2 + 283^2 .

It is a cyclic number.

It is not a de Polignac number, because 4788989 - 2⁸ = 4788733 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4788989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4788929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2394494 + 2394495.

It is an arithmetic number, because the mean of its divisors is an integer number (2394495).

Almost surely, 2^4788989 is an apocalyptic number.

It is an amenable number.

4788989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4788989 is an equidigital number, since it uses as much as digits as its factorization.

4788989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 53.

The square root of 4788989 is about 2188.3758817900. The cubic root of 4788989 is about 168.5574476784.

The spelling of 4788989 in words is "four million, seven hundred eighty-eight thousand, nine hundred eighty-nine".