8749889 has 4 divisors (see below), whose sum is σ = 8756100. Its totient is φ = 8743680.

The previous prime is 8749847. The next prime is 8749891. The reversal of 8749889 is 9889478.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3763600 + 4986289 = 1940^2 + 2233^2 .

It is a cyclic number.

It is not a de Polignac number, because 8749889 - 2²⁰ = 7701313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8749889.

It is not an unprimeable number, because it can be changed into a prime (8749589) 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, 137 + ... + 4185.

It is an arithmetic number, because the mean of its divisors is an integer number (2189025).

Almost surely, 2^8749889 is an apocalyptic number.

It is an amenable number.

8749889 is a deficient number, since it is larger than the sum of its proper divisors (6211).

8749889 is a wasteful number, since it uses less digits than its factorization.

8749889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210.

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

The square root of 8749889 is about 2958.0211290658. The cubic root of 8749889 is about 206.0633936293.

The spelling of 8749889 in words is "eight million, seven hundred forty-nine thousand, eight hundred eighty-nine".