8201090 has 8 divisors (see below), whose sum is σ = 14761980. Its totient is φ = 3280432.

The previous prime is 8201071. The next prime is 8201101. The reversal of 8201090 is 901028.

It can be written as a sum of positive squares in 2 ways, for example, as 7958041 + 243049 = 2821^2 + 493^2 .

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

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410045 + ... + 410064.

Almost surely, 2^8201090 is an apocalyptic number.

8201090 is a deficient number, since it is larger than the sum of its proper divisors (6560890).

8201090 is a wasteful number, since it uses less digits than its factorization.

8201090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820116.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 8201090 is about 2863.7545285866. The cubic root of 8201090 is about 201.6619021558.

The spelling of 8201090 in words is "eight million, two hundred one thousand, ninety".