110905409 has 2 divisors, whose sum is σ = 110905410. Its totient is φ = 110905408.

The previous prime is 110905349. The next prime is 110905411. The reversal of 110905409 is 904509011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110145025 + 760384 = 10495^2 + 872^2 .

It is a cyclic number.

It is not a de Polignac number, because 110905409 - 2¹² = 110901313 is a prime.

Together with 110905411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (110905439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55452704 + 55452705.

It is an arithmetic number, because the mean of its divisors is an integer number (55452705).

Almost surely, 2^110905409 is an apocalyptic number.

It is an amenable number.

110905409 is a deficient number, since it is larger than the sum of its proper divisors (1).

110905409 is an equidigital number, since it uses as much as digits as its factorization.

110905409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 110905409 is about 10531.1637058779. The cubic root of 110905409 is about 480.4529997200.

The spelling of 110905409 in words is "one hundred ten million, nine hundred five thousand, four hundred nine".