113440091 has 2 divisors, whose sum is σ = 113440092. Its totient is φ = 113440090.

The previous prime is 113440043. The next prime is 113440111. The reversal of 113440091 is 190044311.

It is a strong prime.

It is an emirp because it is prime and its reverse (190044311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113440091 - 2⁶ = 113440027 is a prime.

It is not a weakly prime, because it can be changed into another prime (113440391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56720045 + 56720046.

It is an arithmetic number, because the mean of its divisors is an integer number (56720046).

Almost surely, 2^113440091 is an apocalyptic number.

113440091 is a deficient number, since it is larger than the sum of its proper divisors (1).

113440091 is an equidigital number, since it uses as much as digits as its factorization.

113440091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 113440091 is about 10650.8258365255. The cubic root of 113440091 is about 484.0856276227.

The spelling of 113440091 in words is "one hundred thirteen million, four hundred forty thousand, ninety-one".