990582533 has 4 divisors (see below), whose sum is σ = 991826220. Its totient is φ = 989338848.

The previous prime is 990582457. The next prime is 990582553. The reversal of 990582533 is 335285099.

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 189805729 + 800776804 = 13777^2 + 28298^2 .

It is a cyclic number.

It is not a de Polignac number, because 990582533 - 2²⁴ = 973805317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990582553) 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, 620648 + ... + 622241.

It is an arithmetic number, because the mean of its divisors is an integer number (247956555).

Almost surely, 2^990582533 is an apocalyptic number.

It is an amenable number.

990582533 is a deficient number, since it is larger than the sum of its proper divisors (1243687).

990582533 is a wasteful number, since it uses less digits than its factorization.

990582533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243686.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 990582533 is about 31473.5211407939. The cubic root of 990582533 is about 996.8509381521.

The spelling of 990582533 in words is "nine hundred ninety million, five hundred eighty-two thousand, five hundred thirty-three".