4788840989 has 4 divisors (see below), whose sum is σ = 4832775420. Its totient is φ = 4744906560.

The previous prime is 4788840983. The next prime is 4788841037. The reversal of 4788840989 is 9890488874.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3552756025 + 1236084964 = 59605^2 + 35158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4788840989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4788840983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21967052 + ... + 21967269.

It is an arithmetic number, because the mean of its divisors is an integer number (1208193855).

Almost surely, 2^4788840989 is an apocalyptic number.

It is an amenable number.

4788840989 is a deficient number, since it is larger than the sum of its proper divisors (43934431).

4788840989 is a wasteful number, since it uses less digits than its factorization.

4788840989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43934430.

The product of its (nonzero) digits is 37158912, while the sum is 65.

The square root of 4788840989 is about 69201.4522174210. The cubic root of 4788840989 is about 1685.5571115228.

The spelling of 4788840989 in words is "four billion, seven hundred eighty-eight million, eight hundred forty thousand, nine hundred eighty-nine".