100099973 has 2 divisors, whose sum is σ = 100099974. Its totient is φ = 100099972.

The previous prime is 100099969. The next prime is 100099981. The reversal of 100099973 is 379990001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84235684 + 15864289 = 9178^2 + 3983^2 .

It is a cyclic number.

It is not a de Polignac number, because 100099973 - 2² = 100099969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100099913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50049986 + 50049987.

It is an arithmetic number, because the mean of its divisors is an integer number (50049987).

Almost surely, 2^100099973 is an apocalyptic number.

It is an amenable number.

100099973 is a deficient number, since it is larger than the sum of its proper divisors (1).

100099973 is an equidigital number, since it uses as much as digits as its factorization.

100099973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 100099973 is about 10004.9974012990. The cubic root of 100099973 is about 464.3135096980.

The spelling of 100099973 in words is "one hundred million, ninety-nine thousand, nine hundred seventy-three".