103904909 has 2 divisors, whose sum is σ = 103904910. Its totient is φ = 103904908.

The previous prime is 103904903. The next prime is 103904951. The reversal of 103904909 is 909409301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84235684 + 19669225 = 9178^2 + 4435^2 .

It is an emirp because it is prime and its reverse (909409301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103904909 - 2⁴ = 103904893 is a prime.

It is a super-2 number, since 2×103904909² = 21592460228596562, which contains 22 as substring.

It is a Chen prime.

It is equal to p_5973272 and since 103904909 and 5973272 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103904903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51952454 + 51952455.

It is an arithmetic number, because the mean of its divisors is an integer number (51952455).

Almost surely, 2^103904909 is an apocalyptic number.

It is an amenable number.

103904909 is a deficient number, since it is larger than the sum of its proper divisors (1).

103904909 is an equidigital number, since it uses as much as digits as its factorization.

103904909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 103904909 is about 10193.3757411370. The cubic root of 103904909 is about 470.1235664242.

The spelling of 103904909 in words is "one hundred three million, nine hundred four thousand, nine hundred nine".