103640249 has 2 divisors, whose sum is σ = 103640250. Its totient is φ = 103640248.

The previous prime is 103640239. The next prime is 103640261. The reversal of 103640249 is 942046301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52417600 + 51222649 = 7240^2 + 7157^2 .

It is a cyclic number.

It is not a de Polignac number, because 103640249 - 2⁸ = 103639993 is a prime.

It is a super-3 number, since 3×103640249³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (103640239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51820124 + 51820125.

It is an arithmetic number, because the mean of its divisors is an integer number (51820125).

Almost surely, 2^103640249 is an apocalyptic number.

It is an amenable number.

103640249 is a deficient number, since it is larger than the sum of its proper divisors (1).

103640249 is an equidigital number, since it uses as much as digits as its factorization.

103640249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 103640249 is about 10180.3855035062. The cubic root of 103640249 is about 469.7240707226.

The spelling of 103640249 in words is "one hundred three million, six hundred forty thousand, two hundred forty-nine".