8291990 has 16 divisors (see below), whose sum is σ = 17057952. Its totient is φ = 2842944.

The previous prime is 8291989. The next prime is 8292001. The reversal of 8291990 is 991928.

It is a congruent 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, 59159 + ... + 59298.

It is an arithmetic number, because the mean of its divisors is an integer number (1066122).

Almost surely, 2^8291990 is an apocalyptic number.

8291990 is an abundant number, since it is smaller than the sum of its proper divisors (8765962).

8291990 is a wasteful number, since it uses less digits than its factorization.

8291990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118471.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 8291990 is about 2879.5815668253. The cubic root of 8291990 is about 202.4042325194.

The spelling of 8291990 in words is "eight million, two hundred ninety-one thousand, nine hundred ninety".