990422943 has 8 divisors (see below), whose sum is σ = 1320715056. Its totient is φ = 660206400.

The previous prime is 990422929. The next prime is 990422947. The reversal of 990422943 is 349224099.

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

It is not a de Polignac number, because 990422943 - 2⁶ = 990422879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 990422895 and 990422904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990422947) 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, 29133 + ... + 53193.

It is an arithmetic number, because the mean of its divisors is an integer number (165089382).

Almost surely, 2^990422943 is an apocalyptic number.

990422943 is a deficient number, since it is larger than the sum of its proper divisors (330292113).

990422943 is a wasteful number, since it uses less digits than its factorization.

990422943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37785.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 990422943 is about 31470.9857328937. The cubic root of 990422943 is about 996.7974019819.

The spelling of 990422943 in words is "nine hundred ninety million, four hundred twenty-two thousand, nine hundred forty-three".