990558383 has 8 divisors (see below), whose sum is σ = 997457088. Its totient is φ = 983673504.

The previous prime is 990558367. The next prime is 990558433. The reversal of 990558383 is 383855099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 990558383 - 2⁴ = 990558367 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 (990558983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169610 + ... + 175352.

It is an arithmetic number, because the mean of its divisors is an integer number (124682136).

Almost surely, 2^990558383 is an apocalyptic number.

990558383 is a deficient number, since it is larger than the sum of its proper divisors (6898705).

990558383 is a wasteful number, since it uses less digits than its factorization.

990558383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6913.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 990558383 is about 31473.1374826216. The cubic root of 990558383 is about 996.8428371459.

The spelling of 990558383 in words is "nine hundred ninety million, five hundred fifty-eight thousand, three hundred eighty-three".