991202 has 8 divisors (see below), whose sum is σ = 1574316. Its totient is φ = 466432.

The previous prime is 991201. The next prime is 991217. The reversal of 991202 is 202199.

It can be written as a sum of positive squares in 2 ways, for example, as 958441 + 32761 = 979^2 + 181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14543 + ... + 14610.

2⁹⁹¹²⁰² is an apocalyptic number.

991202 is a deficient number, since it is larger than the sum of its proper divisors (583114).

991202 is a wasteful number, since it uses less digits than its factorization.

991202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29172.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 991202 is about 995.5912816010. The cubic root of 991202 is about 99.7058690514.

The spelling of 991202 in words is "nine hundred ninety-one thousand, two hundred two".