8629009 has 2 divisors, whose sum is σ = 8629010. Its totient is φ = 8629008.

The previous prime is 8629003. The next prime is 8629063. The reversal of 8629009 is 9009268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4528384 + 4100625 = 2128^2 + 2025^2 .

It is a cyclic number.

It is not a de Polignac number, because 8629009 - 2²¹ = 6531857 is a prime.

It is not a weakly prime, because it can be changed into another prime (8629003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4314504 + 4314505.

It is an arithmetic number, because the mean of its divisors is an integer number (4314505).

Almost surely, 2^8629009 is an apocalyptic number.

It is an amenable number.

8629009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8629009 is an equidigital number, since it uses as much as digits as its factorization.

8629009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 8629009 is about 2937.5174893096. The cubic root of 8629009 is about 205.1100658200.

The spelling of 8629009 in words is "eight million, six hundred twenty-nine thousand, nine".