8820447 has 8 divisors (see below), whose sum is σ = 11774640. Its totient is φ = 5873280.

The previous prime is 8820421. The next prime is 8820451. The reversal of 8820447 is 7440288.

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

It is not a de Polignac number, because 8820447 - 2¹⁰ = 8819423 is a prime.

8820447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8820347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3079 + ... + 5207.

It is an arithmetic number, because the mean of its divisors is an integer number (1471830).

Almost surely, 2^8820447 is an apocalyptic number.

8820447 is a deficient number, since it is larger than the sum of its proper divisors (2954193).

8820447 is a wasteful number, since it uses less digits than its factorization.

8820447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513.

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 8820447 is about 2969.9237363946. The cubic root of 8820447 is about 206.6158011597.

The spelling of 8820447 in words is "eight million, eight hundred twenty thousand, four hundred forty-seven".