8220903 has 4 divisors (see below), whose sum is σ = 10961208. Its totient is φ = 5480600.

The previous prime is 8220899. The next prime is 8220923. The reversal of 8220903 is 3090228.

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

It is a cyclic number.

It is not a de Polignac number, because 8220903 - 2² = 8220899 is a prime.

It is a super-2 number, since 2×8220903² = 135166492270818, which contains 22 as substring.

8220903 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8220923) 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, 1370148 + ... + 1370153.

It is an arithmetic number, because the mean of its divisors is an integer number (2740302).

Almost surely, 2^8220903 is an apocalyptic number.

8220903 is a deficient number, since it is larger than the sum of its proper divisors (2740305).

8220903 is a wasteful number, since it uses less digits than its factorization.

8220903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740304.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 8220903 is about 2867.2117117506. The cubic root of 8220903 is about 201.8241697724.

The spelling of 8220903 in words is "eight million, two hundred twenty thousand, nine hundred three".