990828593 has 4 divisors (see below), whose sum is σ = 991991028. Its totient is φ = 989666160.

The previous prime is 990828547. The next prime is 990828599. The reversal of 990828593 is 395828099.

It is a happy number.

990828593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 160985344 + 829843249 = 12688^2 + 28807^2 .

It is a cyclic number.

It is not a de Polignac number, because 990828593 - 2¹⁰ = 990827569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990828599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579938 + ... + 581643.

It is an arithmetic number, because the mean of its divisors is an integer number (247997757).

Almost surely, 2^990828593 is an apocalyptic number.

It is an amenable number.

990828593 is a deficient number, since it is larger than the sum of its proper divisors (1162435).

990828593 is a wasteful number, since it uses less digits than its factorization.

990828593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162434.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The square root of 990828593 is about 31477.4298982620. The cubic root of 990828593 is about 996.9334703413.

The spelling of 990828593 in words is "nine hundred ninety million, eight hundred twenty-eight thousand, five hundred ninety-three".