991334 has 4 divisors (see below), whose sum is σ = 1487004. Its totient is φ = 495666.

The previous prime is 991327. The next prime is 991343. The reversal of 991334 is 433199.

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

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 991297 and 991306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247832 + ... + 247835.

It is an arithmetic number, because the mean of its divisors is an integer number (371751).

2⁹⁹¹³³⁴ is an apocalyptic number.

991334 is a deficient number, since it is larger than the sum of its proper divisors (495670).

991334 is a wasteful number, since it uses less digits than its factorization.

991334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495669.

The product of its digits is 2916, while the sum is 29.

The square root of 991334 is about 995.6575716580. The cubic root of 991334 is about 99.7102948531.

The spelling of 991334 in words is "nine hundred ninety-one thousand, three hundred thirty-four".