99773887 has 2 divisors, whose sum is σ = 99773888. Its totient is φ = 99773886.

The previous prime is 99773881. The next prime is 99773893. The reversal of 99773887 is 78837799.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (99773881) and next prime (99773893).

It is a cyclic number.

It is not a de Polignac number, because 99773887 - 2³ = 99773879 is a prime.

It is a super-4 number, since 4×99773887⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99773881) 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, 49886943 + 49886944.

It is an arithmetic number, because the mean of its divisors is an integer number (49886944).

Almost surely, 2^99773887 is an apocalyptic number.

99773887 is a deficient number, since it is larger than the sum of its proper divisors (1).

99773887 is an equidigital number, since it uses as much as digits as its factorization.

99773887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5334336, while the sum is 58.

The square root of 99773887 is about 9988.6879518784. The cubic root of 99773887 is about 463.8087781588.

The spelling of 99773887 in words is "ninety-nine million, seven hundred seventy-three thousand, eight hundred eighty-seven".