629009 has 2 divisors, whose sum is σ = 629010. Its totient is φ = 629008.

The previous prime is 629003. The next prime is 629011. The reversal of 629009 is 900926.

629009 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555025 + 73984 = 745^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 629009 - 2⁴ = 628993 is a prime.

Together with 629011, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is not a weakly prime, because it can be changed into another prime (629003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314504 + 314505.

It is an arithmetic number, because the mean of its divisors is an integer number (314505).

2⁶²⁹⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

629009 is a deficient number, since it is larger than the sum of its proper divisors (1).

629009 is an equidigital number, since it uses as much as digits as its factorization.

629009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 629009 is about 793.1008763077. The cubic root of 629009 is about 85.6812156818.

The spelling of 629009 in words is "six hundred twenty-nine thousand, nine".