103279909 has 2 divisors, whose sum is σ = 103279910. Its totient is φ = 103279908.

The previous prime is 103279907. The next prime is 103279921. The reversal of 103279909 is 909972301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92736900 + 10543009 = 9630^2 + 3247^2 .

It is a cyclic number.

It is not a de Polignac number, because 103279909 - 2¹ = 103279907 is a prime.

Together with 103279907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103279903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51639954 + 51639955.

It is an arithmetic number, because the mean of its divisors is an integer number (51639955).

Almost surely, 2^103279909 is an apocalyptic number.

It is an amenable number.

103279909 is a deficient number, since it is larger than the sum of its proper divisors (1).

103279909 is an equidigital number, since it uses as much as digits as its factorization.

103279909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 103279909 is about 10162.6723355621. The cubic root of 103279909 is about 469.1790542948.

The spelling of 103279909 in words is "one hundred three million, two hundred seventy-nine thousand, nine hundred nine".