990422429 has 2 divisors, whose sum is σ = 990422430. Its totient is φ = 990422428.

The previous prime is 990422423. The next prime is 990422449. The reversal of 990422429 is 924224099.

990422429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 967334404 + 23088025 = 31102^2 + 4805^2 .

It is a cyclic number.

It is not a de Polignac number, because 990422429 - 2²⁴ = 973645213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990422423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495211214 + 495211215.

It is an arithmetic number, because the mean of its divisors is an integer number (495211215).

Almost surely, 2^990422429 is an apocalyptic number.

It is an amenable number.

990422429 is a deficient number, since it is larger than the sum of its proper divisors (1).

990422429 is an equidigital number, since it uses as much as digits as its factorization.

990422429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 990422429 is about 31470.9775666407. The cubic root of 990422429 is about 996.7972295458.

The spelling of 990422429 in words is "nine hundred ninety million, four hundred twenty-two thousand, four hundred twenty-nine".