104989447 has 2 divisors, whose sum is σ = 104989448. Its totient is φ = 104989446.

The previous prime is 104989369. The next prime is 104989517. The reversal of 104989447 is 744989401.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104989447 is a prime.

It is a super-2 number, since 2×104989447² = 22045567962731618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 104989397 and 104989406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104984447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52494723 + 52494724.

It is an arithmetic number, because the mean of its divisors is an integer number (52494724).

Almost surely, 2^104989447 is an apocalyptic number.

104989447 is a deficient number, since it is larger than the sum of its proper divisors (1).

104989447 is an equidigital number, since it uses as much as digits as its factorization.

104989447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 104989447 is about 10246.4358193471. The cubic root of 104989447 is about 471.7535924785.

Subtracting from 104989447 its sum of digits (46), we obtain a palindrome (104989401).

The spelling of 104989447 in words is "one hundred four million, nine hundred eighty-nine thousand, four hundred forty-seven".