991246 has 8 divisors (see below), whose sum is σ = 1500840. Its totient is φ = 490968.

The previous prime is 991229. The next prime is 991261. The reversal of 991246 is 642199.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2056 + ... + 2491.

It is an arithmetic number, because the mean of its divisors is an integer number (187605).

2⁹⁹¹²⁴⁶ is an apocalyptic number.

991246 is a deficient number, since it is larger than the sum of its proper divisors (509594).

991246 is a wasteful number, since it uses less digits than its factorization.

991246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4658.

The product of its digits is 3888, while the sum is 31.

The square root of 991246 is about 995.6133787771. The cubic root of 991246 is about 99.7073443623.

The spelling of 991246 in words is "nine hundred ninety-one thousand, two hundred forty-six".