97799 has 4 divisors (see below), whose sum is σ = 105336. Its totient is φ = 90264.

The previous prime is 97789. The next prime is 97813. The reversal of 97799 is 99779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99779 = 113 ⋅883.

It is a cyclic number.

It is not a de Polignac number, because 97799 - 2¹² = 93703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3749 + ... + 3774.

It is an arithmetic number, because the mean of its divisors is an integer number (26334).

2⁹⁷⁷⁹⁹ is an apocalyptic number.

97799 is a deficient number, since it is larger than the sum of its proper divisors (7537).

97799 is a wasteful number, since it uses less digits than its factorization.

97799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7536.

The product of its digits is 35721, while the sum is 41.

The square root of 97799 is about 312.7283165945. The cubic root of 97799 is about 46.0728210166.

The spelling of 97799 in words is "ninety-seven thousand, seven hundred ninety-nine".