108629009 has 2 divisors, whose sum is σ = 108629010. Its totient is φ = 108629008.

The previous prime is 108628981. The next prime is 108629011. The reversal of 108629009 is 900926801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107578384 + 1050625 = 10372^2 + 1025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108629009 is a prime.

Together with 108629011, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108629009.

It is not a weakly prime, because it can be changed into another prime (108629809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54314504 + 54314505.

It is an arithmetic number, because the mean of its divisors is an integer number (54314505).

Almost surely, 2^108629009 is an apocalyptic number.

It is an amenable number.

108629009 is a deficient number, since it is larger than the sum of its proper divisors (1).

108629009 is an equidigital number, since it uses as much as digits as its factorization.

108629009 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 35.

The square root of 108629009 is about 10422.5241184657. The cubic root of 108629009 is about 477.1430538708.

The spelling of 108629009 in words is "one hundred eight million, six hundred twenty-nine thousand, nine".