103605989 has 2 divisors, whose sum is σ = 103605990. Its totient is φ = 103605988.

The previous prime is 103605977. The next prime is 103606037. The reversal of 103605989 is 989506301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57501889 + 46104100 = 7583^2 + 6790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103605989 is a prime.

It is a super-3 number, since 3×103605989³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103605959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51802994 + 51802995.

It is an arithmetic number, because the mean of its divisors is an integer number (51802995).

Almost surely, 2^103605989 is an apocalyptic number.

It is an amenable number.

103605989 is a deficient number, since it is larger than the sum of its proper divisors (1).

103605989 is an equidigital number, since it uses as much as digits as its factorization.

103605989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 103605989 is about 10178.7027169478. The cubic root of 103605989 is about 469.6723066625.

The spelling of 103605989 in words is "one hundred three million, six hundred five thousand, nine hundred eighty-nine".