991352 has 16 divisors (see below), whose sum is σ = 1882440. Its totient is φ = 489376.

The previous prime is 991343. The next prime is 991357. The reversal of 991352 is 253199.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 991352.

It is not an unprimeable number, because it can be changed into a prime (991357) 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, 83 + ... + 1410.

2⁹⁹¹³⁵² is an apocalyptic number.

It is an amenable number.

991352 is a deficient number, since it is larger than the sum of its proper divisors (891088).

991352 is a wasteful number, since it uses less digits than its factorization.

991352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582 (or 1578 counting only the distinct ones).

The product of its digits is 2430, while the sum is 29.

The square root of 991352 is about 995.6666108693. Note that the first 4 decimals coincide. The cubic root of 991352 is about 99.7108983411.

The spelling of 991352 in words is "nine hundred ninety-one thousand, three hundred fifty-two".