8749747 has 16 divisors (see below), whose sum is σ = 9884160. Its totient is φ = 7696512.

The previous prime is 8749733. The next prime is 8749751. The reversal of 8749747 is 7479478.

It is a de Polignac number, because none of the positive numbers 2^k-8749747 is a prime.

It is a Duffinian number.

8749747 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8749697 and 8749706.

It is not an unprimeable number, because it can be changed into a prime (8749787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33138 + ... + 33400.

It is an arithmetic number, because the mean of its divisors is an integer number (617760).

Almost surely, 2^8749747 is an apocalyptic number.

8749747 is a deficient number, since it is larger than the sum of its proper divisors (1134413).

8749747 is a wasteful number, since it uses less digits than its factorization.

8749747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402.

The product of its digits is 395136, while the sum is 46.

The square root of 8749747 is about 2957.9971264354. The cubic root of 8749747 is about 206.0622789043.

The spelling of 8749747 in words is "eight million, seven hundred forty-nine thousand, seven hundred forty-seven".