990428323 has 8 divisors (see below), whose sum is σ = 1033867296. Its totient is φ = 947020800.

The previous prime is 990428317. The next prime is 990428353. The reversal of 990428323 is 323824099.

990428323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 990428323 - 2⁹ = 990427811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990428353) 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, 75363 + ... + 87523.

It is an arithmetic number, because the mean of its divisors is an integer number (129233412).

Almost surely, 2^990428323 is an apocalyptic number.

990428323 is a deficient number, since it is larger than the sum of its proper divisors (43438973).

990428323 is a wasteful number, since it uses less digits than its factorization.

990428323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15725.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 990428323 is about 31471.0712083335. The cubic root of 990428323 is about 996.7992068540.

The spelling of 990428323 in words is "nine hundred ninety million, four hundred twenty-eight thousand, three hundred twenty-three".