8634749 has 4 divisors (see below), whose sum is σ = 8643936. Its totient is φ = 8625564.

The previous prime is 8634713. The next prime is 8634751. The reversal of 8634749 is 9474368.

8634749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8634749 - 2¹² = 8630653 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 (8634049) 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, 2999 + ... + 5124.

It is an arithmetic number, because the mean of its divisors is an integer number (2160984).

Almost surely, 2^8634749 is an apocalyptic number.

It is an amenable number.

8634749 is a deficient number, since it is larger than the sum of its proper divisors (9187).

8634749 is a wasteful number, since it uses less digits than its factorization.

8634749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9186.

The product of its digits is 145152, while the sum is 41.

The square root of 8634749 is about 2938.4943423461. The cubic root of 8634749 is about 205.1555353450.

The spelling of 8634749 in words is "eight million, six hundred thirty-four thousand, seven hundred forty-nine".