991034 has 16 divisors (see below), whose sum is σ = 1640736. Its totient is φ = 445200.

The previous prime is 991031. The next prime is 991037. The reversal of 991034 is 430199.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (991031) and next prime (991037).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 990994 and 991012.

It is not an unprimeable number, because it can be changed into a prime (991031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2144 + ... + 2564.

It is an arithmetic number, because the mean of its divisors is an integer number (102546).

2⁹⁹¹⁰³⁴ is an apocalyptic number.

991034 is a deficient number, since it is larger than the sum of its proper divisors (649702).

991034 is a wasteful number, since it uses less digits than its factorization.

991034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 991034 is about 995.5069060534. The cubic root of 991034 is about 99.7002356445.

The spelling of 991034 in words is "nine hundred ninety-one thousand, thirty-four".