990228983 has 8 divisors (see below), whose sum is σ = 1048198800. Its totient is φ = 933847488.

The previous prime is 990228973. The next prime is 990228989. The reversal of 990228983 is 389822099.

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 990228983 - 2⁸ = 990228727 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 (990228989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395798 + ... + 398291.

It is an arithmetic number, because the mean of its divisors is an integer number (131024850).

Almost surely, 2^990228983 is an apocalyptic number.

990228983 is a deficient number, since it is larger than the sum of its proper divisors (57969817).

990228983 is a wasteful number, since it uses less digits than its factorization.

990228983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794161.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 990228983 is about 31467.9040134547. The cubic root of 990228983 is about 996.7323282853.

The spelling of 990228983 in words is "nine hundred ninety million, two hundred twenty-eight thousand, nine hundred eighty-three".