990134 has 4 divisors (see below), whose sum is σ = 1485204. Its totient is φ = 495066.

The previous prime is 990053. The next prime is 990137. The reversal of 990134 is 431099.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990137) 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 as a sum of consecutive naturals, namely, 247532 + ... + 247535.

It is an arithmetic number, because the mean of its divisors is an integer number (371301).

2⁹⁹⁰¹³⁴ is an apocalyptic number.

990134 is a deficient number, since it is larger than the sum of its proper divisors (495070).

990134 is a wasteful number, since it uses less digits than its factorization.

990134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495069.

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

The square root of 990134 is about 995.0547723618. The cubic root of 990134 is about 99.6700458332.

The spelling of 990134 in words is "nine hundred ninety thousand, one hundred thirty-four".