8221090 has 16 divisors (see below), whose sum is σ = 15007680. Its totient is φ = 3241840.

The previous prime is 8221069. The next prime is 8221111. The reversal of 8221090 is 901228.

It is an interprime number because it is at equal distance from previous prime (8221069) and next prime (8221111).

It is an Ulam number.

It is an unprimeable number.

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, 5080 + ... + 6499.

It is an arithmetic number, because the mean of its divisors is an integer number (937980).

Almost surely, 2^8221090 is an apocalyptic number.

8221090 is a deficient number, since it is larger than the sum of its proper divisors (6786590).

8221090 is a wasteful number, since it uses less digits than its factorization.

8221090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11657.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 8221090 is about 2867.2443216440. The cubic root of 8221090 is about 201.8257000517.

The spelling of 8221090 in words is "eight million, two hundred twenty-one thousand, ninety".