991295 has 4 divisors (see below), whose sum is σ = 1189560. Its totient is φ = 793032.

The previous prime is 991273. The next prime is 991313. The reversal of 991295 is 592199.

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

It is a cyclic number.

It is not a de Polignac number, because 991295 - 2¹² = 987199 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 99125 + ... + 99134.

It is an arithmetic number, because the mean of its divisors is an integer number (297390).

2⁹⁹¹²⁹⁵ is an apocalyptic number.

991295 is a deficient number, since it is larger than the sum of its proper divisors (198265).

991295 is a wasteful number, since it uses less digits than its factorization.

991295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198264.

The product of its digits is 7290, while the sum is 35.

The square root of 991295 is about 995.6379864188. The cubic root of 991295 is about 99.7089872708.

The spelling of 991295 in words is "nine hundred ninety-one thousand, two hundred ninety-five".