989930629 has 2 divisors, whose sum is σ = 989930630. Its totient is φ = 989930628.

The previous prime is 989930569. The next prime is 989930651. The reversal of 989930629 is 926039989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 571114404 + 418816225 = 23898^2 + 20465^2 .

It is a cyclic number.

It is not a de Polignac number, because 989930629 - 2²¹ = 987833477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 989930629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989930129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494965314 + 494965315.

It is an arithmetic number, because the mean of its divisors is an integer number (494965315).

Almost surely, 2^989930629 is an apocalyptic number.

It is an amenable number.

989930629 is a deficient number, since it is larger than the sum of its proper divisors (1).

989930629 is an equidigital number, since it uses as much as digits as its factorization.

989930629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 55.

The square root of 989930629 is about 31463.1630482379. The cubic root of 989930629 is about 996.6322137482.

The spelling of 989930629 in words is "nine hundred eighty-nine million, nine hundred thirty thousand, six hundred twenty-nine".