90914100091 has 2 divisors, whose sum is σ = 90914100092. Its totient is φ = 90914100090.

The previous prime is 90914100061. The next prime is 90914100113. The reversal of 90914100091 is 19000141909.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90914100091 - 2⁵ = 90914100059 is a prime.

It is not a weakly prime, because it can be changed into another prime (90914100061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45457050045 + 45457050046.

It is an arithmetic number, because the mean of its divisors is an integer number (45457050046).

Almost surely, 2^90914100091 is an apocalyptic number.

90914100091 is a deficient number, since it is larger than the sum of its proper divisors (1).

90914100091 is an equidigital number, since it uses as much as digits as its factorization.

90914100091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 90914100091 in words is "ninety billion, nine hundred fourteen million, one hundred thousand, ninety-one".