990322403 has 16 divisors (see below), whose sum is σ = 1207540224. Its totient is φ = 792804480.

The previous prime is 990322387. The next prime is 990322429. The reversal of 990322403 is 304223099.

It is a cyclic number.

It is not a de Polignac number, because 990322403 - 2⁴ = 990322387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 990322403.

It is not an unprimeable number, because it can be changed into a prime (990322483) 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 15 ways as a sum of consecutive naturals, for example, 16175 + ... + 47352.

It is an arithmetic number, because the mean of its divisors is an integer number (75471264).

Almost surely, 2^990322403 is an apocalyptic number.

990322403 is a deficient number, since it is larger than the sum of its proper divisors (217217821).

990322403 is a wasteful number, since it uses less digits than its factorization.

990322403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63682.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 990322403 is about 31469.3883480439. The cubic root of 990322403 is about 996.7636718121.

The spelling of 990322403 in words is "nine hundred ninety million, three hundred twenty-two thousand, four hundred three".