9802 has 12 divisors (see below), whose sum is σ = 16470. Its totient is φ = 4368.

The previous prime is 9791. The next prime is 9803. The reversal of 9802 is 2089.

9802 = T₆₈ + T₆₉ + ... + T₇₁.

It is a Cunningham number, because it is equal to 99²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 5041 + 4761 = 71^2 + 69^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9802.

It is not an unprimeable number, because it can be changed into a prime (9803) 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, 324 + ... + 352.

2⁹⁸⁰² is an apocalyptic number.

9802 is a deficient number, since it is larger than the sum of its proper divisors (6668).

9802 is a wasteful number, since it uses less digits than its factorization.

9802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 9802 is about 99.0050503762. The cubic root of 9802 is about 21.4012052776.

The spelling of 9802 in words is "nine thousand, eight hundred two".