1109401 has 2 divisors, whose sum is σ = 1109402. Its totient is φ = 1109400.

The previous prime is 1109399. The next prime is 1109411. The reversal of 1109401 is 1049011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585225 + 524176 = 765^2 + 724^2 .

It is an emirp because it is prime and its reverse (1049011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1109401 - 2¹ = 1109399 is a prime.

Together with 1109399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1109411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554700 + 554701.

It is an arithmetic number, because the mean of its divisors is an integer number (554701).

2^1109401 is an apocalyptic number.

It is an amenable number.

1109401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109401 is an equidigital number, since it uses as much as digits as its factorization.

1109401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1109401 is about 1053.2810641040. The cubic root of 1109401 is about 103.5212524523.

The spelling of 1109401 in words is "one million, one hundred nine thousand, four hundred one".