104509439 has 2 divisors, whose sum is σ = 104509440. Its totient is φ = 104509438.

The previous prime is 104509411. The next prime is 104509453. The reversal of 104509439 is 934905401.

It is a strong prime.

It is an emirp because it is prime and its reverse (934905401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104509439 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 104509399 and 104509408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104509499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52254719 + 52254720.

It is an arithmetic number, because the mean of its divisors is an integer number (52254720).

Almost surely, 2^104509439 is an apocalyptic number.

104509439 is a deficient number, since it is larger than the sum of its proper divisors (1).

104509439 is an equidigital number, since it uses as much as digits as its factorization.

104509439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 104509439 is about 10222.9858162867. The cubic root of 104509439 is about 471.0335471648.

The spelling of 104509439 in words is "one hundred four million, five hundred nine thousand, four hundred thirty-nine".