991050 has 24 divisors (see below), whose sum is σ = 2458176. Its totient is φ = 264240.

The previous prime is 991043. The next prime is 991057. The reversal of 991050 is 50199.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (991043) and next prime (991057).

It is a self number, because there is not a number n which added to its sum of digits gives 991050.

It is not an unprimeable number, because it can be changed into a prime (991057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3154 + ... + 3453.

It is an arithmetic number, because the mean of its divisors is an integer number (102424).

2⁹⁹¹⁰⁵⁰ is an apocalyptic number.

991050 is an abundant number, since it is smaller than the sum of its proper divisors (1467126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

991050 is a wasteful number, since it uses less digits than its factorization.

991050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6622 (or 6617 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 24.

The square root of 991050 is about 995.5149421279. The cubic root of 991050 is about 99.7007721869.

The spelling of 991050 in words is "nine hundred ninety-one thousand, fifty".