99945793 has 4 divisors (see below), whose sum is σ = 100976260. Its totient is φ = 98915328.

The previous prime is 99945763. The next prime is 99945817. The reversal of 99945793 is 39754999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82573569 + 17372224 = 9087^2 + 4168^2 .

It is a cyclic number.

It is not a de Polignac number, because 99945793 - 2⁵ = 99945761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99945743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515088 + ... + 515281.

It is an arithmetic number, because the mean of its divisors is an integer number (25244065).

Almost surely, 2^99945793 is an apocalyptic number.

It is an amenable number.

99945793 is a deficient number, since it is larger than the sum of its proper divisors (1030467).

99945793 is a wasteful number, since it uses less digits than its factorization.

99945793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030466.

The product of its digits is 2755620, while the sum is 55.

The square root of 99945793 is about 9997.2892826006. The cubic root of 99945793 is about 464.0749993338.

The spelling of 99945793 in words is "ninety-nine million, nine hundred forty-five thousand, seven hundred ninety-three".