8447090 has 8 divisors (see below), whose sum is σ = 15204780. Its totient is φ = 3378832.

The previous prime is 8447081. The next prime is 8447093. The reversal of 8447090 is 907448.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8025889 + 421201 = 2833^2 + 649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (8447093) 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, 422345 + ... + 422364.

Almost surely, 2^8447090 is an apocalyptic number.

8447090 is a deficient number, since it is larger than the sum of its proper divisors (6757690).

8447090 is a wasteful number, since it uses less digits than its factorization.

8447090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844716.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 8447090 is about 2906.3877924324. The cubic root of 8447090 is about 203.6584217153.

It can be divided in two parts, 84 and 47090, that added together give a palindrome (47174).

The spelling of 8447090 in words is "eight million, four hundred forty-seven thousand, ninety".