105488809 has 2 divisors, whose sum is σ = 105488810. Its totient is φ = 105488808.

The previous prime is 105488807. The next prime is 105488843. The reversal of 105488809 is 908884501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84695209 + 20793600 = 9203^2 + 4560^2 .

It is a cyclic number.

It is not a de Polignac number, because 105488809 - 2¹ = 105488807 is a prime.

It is a super-2 number, since 2×105488809² = 22255777648476962, which contains 22 as substring.

Together with 105488807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (105488807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52744404 + 52744405.

It is an arithmetic number, because the mean of its divisors is an integer number (52744405).

Almost surely, 2^105488809 is an apocalyptic number.

It is an amenable number.

105488809 is a deficient number, since it is larger than the sum of its proper divisors (1).

105488809 is an equidigital number, since it uses as much as digits as its factorization.

105488809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 105488809 is about 10270.7745082832. The cubic root of 105488809 is about 472.5003447083.

The spelling of 105488809 in words is "one hundred five million, four hundred eighty-eight thousand, eight hundred nine".