99770133 has 8 divisors (see below), whose sum is σ = 133152928. Its totient is φ = 66450384.

The previous prime is 99770129. The next prime is 99770141. The reversal of 99770133 is 33107799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99770133 - 2² = 99770129 is a prime.

It is the 9989-th Hogben number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 99770091 and 99770100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99770533) by changing a digit.

It is a nontrivial repunit in base 9988.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11935 + ... + 18492.

It is an arithmetic number, because the mean of its divisors is an integer number (16644116).

Almost surely, 2^99770133 is an apocalyptic number.

It is an amenable number.

99770133 is a deficient number, since it is larger than the sum of its proper divisors (33382795).

99770133 is a wasteful number, since it uses less digits than its factorization.

99770133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31523.

The product of its (nonzero) digits is 35721, while the sum is 39.

The square root of 99770133 is about 9988.5000375432. The cubic root of 99770133 is about 463.8029611391.

The spelling of 99770133 in words is "ninety-nine million, seven hundred seventy thousand, one hundred thirty-three".