8499749 has 4 divisors (see below), whose sum is σ = 8525760. Its totient is φ = 8473740.

The previous prime is 8499739. The next prime is 8499763. The reversal of 8499749 is 9479948.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8499749 - 2¹⁶ = 8434213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8499697 and 8499706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8499739) 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, 12509 + ... + 13170.

It is an arithmetic number, because the mean of its divisors is an integer number (2131440).

Almost surely, 2^8499749 is an apocalyptic number.

It is an amenable number.

8499749 is a deficient number, since it is larger than the sum of its proper divisors (26011).

8499749 is a wasteful number, since it uses less digits than its factorization.

8499749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26010.

The product of its digits is 653184, while the sum is 50.

The square root of 8499749 is about 2915.4329009600. The cubic root of 8499749 is about 204.0807462615.

The spelling of 8499749 in words is "eight million, four hundred ninety-nine thousand, seven hundred forty-nine".