8438629 has 2 divisors, whose sum is σ = 8438630. Its totient is φ = 8438628.

The previous prime is 8438609. The next prime is 8438653. The reversal of 8438629 is 9268348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4941729 + 3496900 = 2223^2 + 1870^2 .

It is a cyclic number.

It is not a de Polignac number, because 8438629 - 2⁹ = 8438117 is a prime.

8438629 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8438591 and 8438600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8438609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4219314 + 4219315.

It is an arithmetic number, because the mean of its divisors is an integer number (4219315).

Almost surely, 2^8438629 is an apocalyptic number.

It is an amenable number.

8438629 is a deficient number, since it is larger than the sum of its proper divisors (1).

8438629 is an equidigital number, since it uses as much as digits as its factorization.

8438629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 8438629 is about 2904.9318408527. The cubic root of 8438629 is about 203.5904010692.

The spelling of 8438629 in words is "eight million, four hundred thirty-eight thousand, six hundred twenty-nine".