990034 has 4 divisors (see below), whose sum is σ = 1485054. Its totient is φ = 495016.

The previous prime is 990023. The next prime is 990037. The reversal of 990034 is 430099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 430099 = 29 ⋅14831.

It can be written as a sum of positive squares in only one way, i.e., 990025 + 9 = 995^2 + 3^2 .

It is a junction number, because it is equal to n+sod(n) for n = 989990 and 990008.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 990034.

It is not an unprimeable number, because it can be changed into a prime (990037) 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 as a sum of consecutive naturals, namely, 247507 + ... + 247510.

2⁹⁹⁰⁰³⁴ is an apocalyptic number.

990034 is a deficient number, since it is larger than the sum of its proper divisors (495020).

990034 is a wasteful number, since it uses less digits than its factorization.

990034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495019.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 990034 is about 995.0045226028. The cubic root of 990034 is about 99.6666902806. Note that the first 4 decimals are identical.

The spelling of 990034 in words is "nine hundred ninety thousand, thirty-four".