91841822 has 4 divisors (see below), whose sum is σ = 137762736. Its totient is φ = 45920910.

The previous prime is 91841821. The next prime is 91841833. The reversal of 91841822 is 22814819.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22814819 = 41 ⋅556459.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91841821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22960454 + ... + 22960457.

It is an arithmetic number, because the mean of its divisors is an integer number (34440684).

Almost surely, 2^91841822 is an apocalyptic number.

91841822 is a deficient number, since it is larger than the sum of its proper divisors (45920914).

91841822 is a wasteful number, since it uses less digits than its factorization.

91841822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45920913.

The product of its digits is 9216, while the sum is 35.

The square root of 91841822 is about 9583.4139011106. The cubic root of 91841822 is about 451.1768733798.

The spelling of 91841822 in words is "ninety-one million, eight hundred forty-one thousand, eight hundred twenty-two".