79802 has 4 divisors (see below), whose sum is σ = 119706. Its totient is φ = 39900.

The previous prime is 79801. The next prime is 79811. The reversal of 79802 is 20897.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 78961 + 841 = 281^2 + 29^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (79801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19949 + ... + 19952.

2⁷⁹⁸⁰² is an apocalyptic number.

79802 is a deficient number, since it is larger than the sum of its proper divisors (39904).

79802 is a wasteful number, since it uses less digits than its factorization.

79802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39903.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 79802 is about 282.4924777760. The cubic root of 79802 is about 43.0531162606.

The spelling of 79802 in words is "seventy-nine thousand, eight hundred two".