103900861 has 2 divisors, whose sum is σ = 103900862. Its totient is φ = 103900860.

The previous prime is 103900843. The next prime is 103900877. The reversal of 103900861 is 168009301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68724100 + 35176761 = 8290^2 + 5931^2 .

It is an emirp because it is prime and its reverse (168009301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103900861 - 2¹¹ = 103898813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103900801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51950430 + 51950431.

It is an arithmetic number, because the mean of its divisors is an integer number (51950431).

Almost surely, 2^103900861 is an apocalyptic number.

It is an amenable number.

103900861 is a deficient number, since it is larger than the sum of its proper divisors (1).

103900861 is an equidigital number, since it uses as much as digits as its factorization.

103900861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 103900861 is about 10193.1771788780. The cubic root of 103900861 is about 470.1174612108.

The spelling of 103900861 in words is "one hundred three million, nine hundred thousand, eight hundred sixty-one".