99782 has 4 divisors (see below), whose sum is σ = 149676. Its totient is φ = 49890.

The previous prime is 99767. The next prime is 99787. The reversal of 99782 is 28799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28799 = 31 ⋅929.

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 as a sum of consecutive naturals, namely, 24944 + ... + 24947.

It is an arithmetic number, because the mean of its divisors is an integer number (37419).

2⁹⁹⁷⁸² is an apocalyptic number.

99782 is a deficient number, since it is larger than the sum of its proper divisors (49894).

99782 is a wasteful number, since it uses less digits than its factorization.

99782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49893.

The product of its digits is 9072, while the sum is 35.

The square root of 99782 is about 315.8828896917. The cubic root of 99782 is about 46.3821349179.

The spelling of 99782 in words is "ninety-nine thousand, seven hundred eighty-two".