991962 has 12 divisors (see below), whose sum is σ = 2149290. Its totient is φ = 330648.

The previous prime is 991961. The next prime is 991973. The reversal of 991962 is 269199.

It can be written as a sum of positive squares in only one way, i.e., 690561 + 301401 = 831^2 + 549^2 .

It is a nude number because it is divisible by every one of its digits.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 991962.

It is not an unprimeable number, because it can be changed into a prime (991961) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 27537 + ... + 27572.

2⁹⁹¹⁹⁶² is an apocalyptic number.

991962 is an abundant number, since it is smaller than the sum of its proper divisors (1157328).

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

991962 is a wasteful number, since it uses less digits than its factorization.

991962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55117 (or 55114 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 991962 is about 995.9728911973. The cubic root of 991962 is about 99.7313455609.

It can be divided in two parts, 991 and 962, that added together give a triangular number (1953 = T₆₂).

The spelling of 991962 in words is "nine hundred ninety-one thousand, nine hundred sixty-two".