100091773 has 2 divisors, whose sum is σ = 100091774. Its totient is φ = 100091772.

The previous prime is 100091749. The next prime is 100091779. The reversal of 100091773 is 377190001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99960004 + 131769 = 9998^2 + 363^2 .

It is a cyclic number.

It is not a de Polignac number, because 100091773 - 2⁹ = 100091261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100091779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50045886 + 50045887.

It is an arithmetic number, because the mean of its divisors is an integer number (50045887).

Almost surely, 2^100091773 is an apocalyptic number.

It is an amenable number.

100091773 is a deficient number, since it is larger than the sum of its proper divisors (1).

100091773 is an equidigital number, since it uses as much as digits as its factorization.

100091773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1323, while the sum is 28.

The square root of 100091773 is about 10004.5875976974. The cubic root of 100091773 is about 464.3008307910.

The spelling of 100091773 in words is "one hundred million, ninety-one thousand, seven hundred seventy-three".