99773893 has 2 divisors, whose sum is σ = 99773894. Its totient is φ = 99773892.

The previous prime is 99773887. The next prime is 99773899. The reversal of 99773893 is 39837799.

It is a balanced prime because it is at equal distance from previous prime (99773887) and next prime (99773899).

It can be written as a sum of positive squares in only one way, i.e., 89832484 + 9941409 = 9478^2 + 3153^2 .

It is an emirp because it is prime and its reverse (39837799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99773893 - 2⁹ = 99773381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99773899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49886946 + 49886947.

It is an arithmetic number, because the mean of its divisors is an integer number (49886947).

Almost surely, 2^99773893 is an apocalyptic number.

It is an amenable number.

99773893 is a deficient number, since it is larger than the sum of its proper divisors (1).

99773893 is an equidigital number, since it uses as much as digits as its factorization.

99773893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2571912, while the sum is 55.

The square root of 99773893 is about 9988.6882522181. The cubic root of 99773893 is about 463.8087874560.

The spelling of 99773893 in words is "ninety-nine million, seven hundred seventy-three thousand, eight hundred ninety-three".