990317822 has 16 divisors (see below), whose sum is σ = 1600321632. Its totient is φ = 456904800.

The previous prime is 990317819. The next prime is 990317893. The reversal of 990317822 is 228713099.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 990317822.

It is a congruent number.

It is an unprimeable number.

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, 95072 + ... + 104972.

It is an arithmetic number, because the mean of its divisors is an integer number (100020102).

Almost surely, 2^990317822 is an apocalyptic number.

990317822 is a deficient number, since it is larger than the sum of its proper divisors (610003810).

990317822 is a wasteful number, since it uses less digits than its factorization.

990317822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13763.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 990317822 is about 31469.3155629416. The cubic root of 990317822 is about 996.7621348778.

The spelling of 990317822 in words is "nine hundred ninety million, three hundred seventeen thousand, eight hundred twenty-two".