8920447 has 8 divisors (see below), whose sum is σ = 9110912. Its totient is φ = 8731800.

The previous prime is 8920433. The next prime is 8920463. The reversal of 8920447 is 7440298.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8920447 - 2¹⁵ = 8887679 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 (8920147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13822 + ... + 14452.

It is an arithmetic number, because the mean of its divisors is an integer number (1138864).

Almost surely, 2^8920447 is an apocalyptic number.

8920447 is a deficient number, since it is larger than the sum of its proper divisors (190465).

8920447 is a wasteful number, since it uses less digits than its factorization.

8920447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 8920447 is about 2986.7117370111. The cubic root of 8920447 is about 207.3936901599.

The spelling of 8920447 in words is "eight million, nine hundred twenty thousand, four hundred forty-seven".