99780033 has 16 divisors (see below), whose sum is σ = 135668160. Its totient is φ = 65212416.

The previous prime is 99779989. The next prime is 99780059. The reversal of 99780033 is 33008799.

It is a happy number.

It is not a de Polignac number, because 99780033 - 2⁸ = 99779777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99779973 and 99780000.

It is not an unprimeable number, because it can be changed into a prime (99780433) 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 15 ways as a sum of consecutive naturals, for example, 101641 + ... + 102617.

It is an arithmetic number, because the mean of its divisors is an integer number (8479260).

Almost surely, 2^99780033 is an apocalyptic number.

It is an amenable number.

99780033 is a deficient number, since it is larger than the sum of its proper divisors (35888127).

99780033 is a wasteful number, since it uses less digits than its factorization.

99780033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 99780033 is about 9988.9955951537. The cubic root of 99780033 is about 463.8183013928.

The spelling of 99780033 in words is "ninety-nine million, seven hundred eighty thousand, thirty-three".