8749387 has 4 divisors (see below), whose sum is σ = 9051120. Its totient is φ = 8447656.

The previous prime is 8749357. The next prime is 8749417. The reversal of 8749387 is 7839478.

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

It is an interprime number because it is at equal distance from previous prime (8749357) and next prime (8749417).

It is a cyclic number.

It is not a de Polignac number, because 8749387 - 2¹⁵ = 8716619 is a prime.

It is a Duffinian number.

8749387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8749337) 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, 150823 + ... + 150880.

It is an arithmetic number, because the mean of its divisors is an integer number (2262780).

Almost surely, 2^8749387 is an apocalyptic number.

8749387 is a deficient number, since it is larger than the sum of its proper divisors (301733).

8749387 is a wasteful number, since it uses less digits than its factorization.

8749387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301732.

The product of its digits is 338688, while the sum is 46.

The square root of 8749387 is about 2957.9362738234. The cubic root of 8749387 is about 206.0594527868.

Subtracting from 8749387 its reverse (7839478), we obtain a palindrome (909909).

The spelling of 8749387 in words is "eight million, seven hundred forty-nine thousand, three hundred eighty-seven".