8749447 has 4 divisors (see below), whose sum is σ = 9999376. Its totient is φ = 7499520.

The previous prime is 8749439. The next prime is 8749451. The reversal of 8749447 is 7449478.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 8749447 - 2³ = 8749439 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 (8749417) 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, 624954 + ... + 624967.

It is an arithmetic number, because the mean of its divisors is an integer number (2499844).

Almost surely, 2^8749447 is an apocalyptic number.

8749447 is a deficient number, since it is larger than the sum of its proper divisors (1249929).

8749447 is a wasteful number, since it uses less digits than its factorization.

8749447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249928.

The product of its digits is 225792, while the sum is 43.

The square root of 8749447 is about 2957.9464160123. The cubic root of 8749447 is about 206.0599238118.

The spelling of 8749447 in words is "eight million, seven hundred forty-nine thousand, four hundred forty-seven".