8422091 has 4 divisors (see below), whose sum is σ = 8540784. Its totient is φ = 8303400.

The previous prime is 8422079. The next prime is 8422133. The reversal of 8422091 is 1902248.

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 8422091 - 2⁶ = 8422027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8422091.

It is not an unprimeable number, because it can be changed into a prime (8422061) 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, 59240 + ... + 59381.

It is an arithmetic number, because the mean of its divisors is an integer number (2135196).

Almost surely, 2^8422091 is an apocalyptic number.

8422091 is a deficient number, since it is larger than the sum of its proper divisors (118693).

8422091 is a wasteful number, since it uses less digits than its factorization.

8422091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118692.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 8422091 is about 2902.0839064369. The cubic root of 8422091 is about 203.4573154704.

The spelling of 8422091 in words is "eight million, four hundred twenty-two thousand, ninety-one".