8724449 has 4 divisors (see below), whose sum is σ = 8844036. Its totient is φ = 8604864.

The previous prime is 8724437. The next prime is 8724461. The reversal of 8724449 is 9444278.

8724449 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.

It is an interprime number because it is at equal distance from previous prime (8724437) and next prime (8724461).

It can be written as a sum of positive squares in 2 ways, for example, as 3972049 + 4752400 = 1993^2 + 2180^2 .

It is a cyclic number.

It is not a de Polignac number, because 8724449 - 2²⁰ = 7675873 is a prime.

It is a super-2 number, since 2×8724449² = 152232020707202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8724479) 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, 59684 + ... + 59829.

It is an arithmetic number, because the mean of its divisors is an integer number (2211009).

Almost surely, 2^8724449 is an apocalyptic number.

It is an amenable number.

8724449 is a deficient number, since it is larger than the sum of its proper divisors (119587).

8724449 is a wasteful number, since it uses less digits than its factorization.

8724449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119586.

The product of its digits is 64512, while the sum is 38.

The square root of 8724449 is about 2953.7178267397. The cubic root of 8724449 is about 205.8634923691.

The spelling of 8724449 in words is "eight million, seven hundred twenty-four thousand, four hundred forty-nine".