99773087 has 4 divisors (see below), whose sum is σ = 100290240. Its totient is φ = 99255936.

The previous prime is 99773081. The next prime is 99773101. The reversal of 99773087 is 78037799.

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

It is a cyclic number.

It is not a de Polignac number, because 99773087 - 2¹⁰ = 99772063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99773081) 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 in 3 ways as a sum of consecutive naturals, for example, 258287 + ... + 258672.

It is an arithmetic number, because the mean of its divisors is an integer number (25072560).

Almost surely, 2^99773087 is an apocalyptic number.

99773087 is a deficient number, since it is larger than the sum of its proper divisors (517153).

99773087 is a wasteful number, since it uses less digits than its factorization.

99773087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517152.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 99773087 is about 9988.6479064987. The cubic root of 99773087 is about 463.8075385291.

The spelling of 99773087 in words is "ninety-nine million, seven hundred seventy-three thousand, eighty-seven".