991346 has 12 divisors (see below), whose sum is σ = 1556142. Its totient is φ = 473616.

The previous prime is 991343. The next prime is 991357. The reversal of 991346 is 643199.

It can be written as a sum of positive squares in only one way, i.e., 978121 + 13225 = 989^2 + 115^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 991346.

It is not an unprimeable number, because it can be changed into a prime (991343) 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, 590 + ... + 1526.

2⁹⁹¹³⁴⁶ is an apocalyptic number.

991346 is a deficient number, since it is larger than the sum of its proper divisors (564796).

991346 is a wasteful number, since it uses less digits than its factorization.

991346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 962 counting only the distinct ones).

The product of its digits is 5832, while the sum is 32.

The square root of 991346 is about 995.6635978080. The cubic root of 991346 is about 99.7106971792.

The spelling of 991346 in words is "nine hundred ninety-one thousand, three hundred forty-six".