990793 has 4 divisors (see below), whose sum is σ = 1042960. Its totient is φ = 938628.

The previous prime is 990767. The next prime is 990797. The reversal of 990793 is 397099.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 990793 - 2⁵ = 990761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990797) 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 3 ways as a sum of consecutive naturals, for example, 26055 + ... + 26092.

It is an arithmetic number, because the mean of its divisors is an integer number (260740).

2⁹⁹⁰⁷⁹³ is an apocalyptic number.

It is an amenable number.

990793 is a deficient number, since it is larger than the sum of its proper divisors (52167).

990793 is a wasteful number, since it uses less digits than its factorization.

990793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52166.

The product of its (nonzero) digits is 15309, while the sum is 37.

The square root of 990793 is about 995.3858548322. The cubic root of 990793 is about 99.6921532764.

It can be divided in two parts, 9907 and 93, that added together give a 4-th power (10000 = 10⁴).

The spelling of 990793 in words is "nine hundred ninety thousand, seven hundred ninety-three".