104215439 has 2 divisors, whose sum is σ = 104215440. Its totient is φ = 104215438.

The previous prime is 104215387. The next prime is 104215453. The reversal of 104215439 is 934512401.

It is a strong prime.

It is an emirp because it is prime and its reverse (934512401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104215439 - 2²⁴ = 87438223 is a prime.

It is equal to p_5990231 and since 104215439 and 5990231 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 (104215469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52107719 + 52107720.

It is an arithmetic number, because the mean of its divisors is an integer number (52107720).

Almost surely, 2^104215439 is an apocalyptic number.

104215439 is a deficient number, since it is larger than the sum of its proper divisors (1).

104215439 is an equidigital number, since it uses as much as digits as its factorization.

104215439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 104215439 is about 10208.5963285850. The cubic root of 104215439 is about 470.5914374191.

The spelling of 104215439 in words is "one hundred four million, two hundred fifteen thousand, four hundred thirty-nine".