40822091 has 4 divisors (see below), whose sum is σ = 41002152. Its totient is φ = 40642032.

The previous prime is 40822081. The next prime is 40822099. The reversal of 40822091 is 19022804.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40822091 is a prime.

It is a super-2 number, since 2×40822091² = 3332886227224562, which contains 22 as substring.

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 40822091.

It is not an unprimeable number, because it can be changed into a prime (40822099) 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, 89690 + ... + 90143.

It is an arithmetic number, because the mean of its divisors is an integer number (10250538).

Almost surely, 2^40822091 is an apocalyptic number.

40822091 is a deficient number, since it is larger than the sum of its proper divisors (180061).

40822091 is a wasteful number, since it uses less digits than its factorization.

40822091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180060.

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

The square root of 40822091 is about 6389.2167751611. The cubic root of 40822091 is about 344.3222456995.

Adding to 40822091 its reverse (19022804), we get a palindrome (59844895).

The spelling of 40822091 in words is "forty million, eight hundred twenty-two thousand, ninety-one".