990074 has 4 divisors (see below), whose sum is σ = 1485114. Its totient is φ = 495036.

The previous prime is 990053. The next prime is 990137. The reversal of 990074 is 470099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 470099 = 7 ⋅67157.

It can be written as a sum of positive squares in only one way, i.e., 990025 + 49 = 995^2 + 7^2 .

It is an unprimeable number.

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, 247517 + ... + 247520.

2⁹⁹⁰⁰⁷⁴ is an apocalyptic number.

990074 is a deficient number, since it is larger than the sum of its proper divisors (495040).

990074 is a wasteful number, since it uses less digits than its factorization.

990074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495039.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 990074 is about 995.0246228109. The cubic root of 990074 is about 99.6680325288.

The spelling of 990074 in words is "nine hundred ninety thousand, seventy-four".