8744729 has 4 divisors (see below), whose sum is σ = 9993984. Its totient is φ = 7495476.

The previous prime is 8744717. The next prime is 8744737. The reversal of 8744729 is 9274478.

8744729 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 an emirpimes, since its reverse is a distinct semiprime: 9274478 = 2 ⋅4637239.

It is a cyclic number.

It is not a de Polignac number, because 8744729 - 2¹⁶ = 8679193 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8744129) 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, 624617 + ... + 624630.

It is an arithmetic number, because the mean of its divisors is an integer number (2498496).

Almost surely, 2^8744729 is an apocalyptic number.

It is an amenable number.

8744729 is a deficient number, since it is larger than the sum of its proper divisors (1249255).

8744729 is a wasteful number, since it uses less digits than its factorization.

8744729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249254.

The product of its digits is 112896, while the sum is 41.

The square root of 8744729 is about 2957.1487957152. The cubic root of 8744729 is about 206.0228789746.

The spelling of 8744729 in words is "eight million, seven hundred forty-four thousand, seven hundred twenty-nine".