105404449 has 4 divisors (see below), whose sum is σ = 105557680. Its totient is φ = 105251220.

The previous prime is 105404447. The next prime is 105404461. The reversal of 105404449 is 944404501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105404449 - 2¹ = 105404447 is a prime.

It is a super-2 number, since 2×105404449² = 22220195737987202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105404449.

It is not an unprimeable number, because it can be changed into a prime (105404447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75579 + ... + 76960.

It is an arithmetic number, because the mean of its divisors is an integer number (26389420).

Almost surely, 2^105404449 is an apocalyptic number.

It is an amenable number.

105404449 is a deficient number, since it is larger than the sum of its proper divisors (153231).

105404449 is an equidigital number, since it uses as much as digits as its factorization.

105404449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153230.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 105404449 is about 10266.6668885281. Note that the first 3 decimals coincide. The cubic root of 105404449 is about 472.3743573812.

The spelling of 105404449 in words is "one hundred five million, four hundred four thousand, four hundred forty-nine".