104784409 has 2 divisors, whose sum is σ = 104784410. Its totient is φ = 104784408.

The previous prime is 104784403. The next prime is 104784431. The reversal of 104784409 is 904487401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102313225 + 2471184 = 10115^2 + 1572^2 .

It is a cyclic number.

It is not a de Polignac number, because 104784409 - 2³ = 104784401 is a prime.

It is not a weakly prime, because it can be changed into another prime (104784401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52392204 + 52392205.

It is an arithmetic number, because the mean of its divisors is an integer number (52392205).

Almost surely, 2^104784409 is an apocalyptic number.

It is an amenable number.

104784409 is a deficient number, since it is larger than the sum of its proper divisors (1).

104784409 is an equidigital number, since it uses as much as digits as its factorization.

104784409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 104784409 is about 10236.4255968575. The cubic root of 104784409 is about 471.4462903262.

The spelling of 104784409 in words is "one hundred four million, seven hundred eighty-four thousand, four hundred nine".