989629 has 2 divisors, whose sum is σ = 989630. Its totient is φ = 989628.

The previous prime is 989623. The next prime is 989641. The reversal of 989629 is 926989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 632025 + 357604 = 795^2 + 598^2 .

It is a cyclic number.

It is not a de Polignac number, because 989629 - 2¹³ = 981437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494814 + 494815.

It is an arithmetic number, because the mean of its divisors is an integer number (494815).

2⁹⁸⁹⁶²⁹ is an apocalyptic number.

It is an amenable number.

989629 is a deficient number, since it is larger than the sum of its proper divisors (1).

989629 is an equidigital number, since it uses as much as digits as its factorization.

989629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 43.

The square root of 989629 is about 994.8009851221. The cubic root of 989629 is about 99.6530979814.

The spelling of 989629 in words is "nine hundred eighty-nine thousand, six hundred twenty-nine".