105404447 has 2 divisors, whose sum is σ = 105404448. Its totient is φ = 105404446.

The previous prime is 105404393. The next prime is 105404461. The reversal of 105404447 is 744404501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105404447 - 2¹⁰ = 105403423 is a prime.

It is a super-2 number, since 2×105404447² = 22220194894751618, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105404477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52702223 + 52702224.

It is an arithmetic number, because the mean of its divisors is an integer number (52702224).

Almost surely, 2^105404447 is an apocalyptic number.

105404447 is a deficient number, since it is larger than the sum of its proper divisors (1).

105404447 is an equidigital number, since it uses as much as digits as its factorization.

105404447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 105404447 is about 10266.6667911255. Note that the first 3 decimals coincide. The cubic root of 105404447 is about 472.3743543935.

Adding to 105404447 its reverse (744404501), we get a palindrome (849808948).

The spelling of 105404447 in words is "one hundred five million, four hundred four thousand, four hundred forty-seven".