99783 has 6 divisors (see below), whose sum is σ = 144144. Its totient is φ = 66516.

The previous prime is 99767. The next prime is 99787. The reversal of 99783 is 38799.

It is not a de Polignac number, because 99783 - 2⁴ = 99767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5535 + ... + 5552.

It is an arithmetic number, because the mean of its divisors is an integer number (24024).

2⁹⁹⁷⁸³ is an apocalyptic number.

99783 is a deficient number, since it is larger than the sum of its proper divisors (44361).

99783 is a wasteful number, since it uses less digits than its factorization.

99783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11093 (or 11090 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 99783 is about 315.8844725529. The cubic root of 99783 is about 46.3822898623.

The spelling of 99783 in words is "ninety-nine thousand, seven hundred eighty-three".