1101439 has 2 divisors, whose sum is σ = 1101440. Its totient is φ = 1101438.

The previous prime is 1101433. The next prime is 1101467. The reversal of 1101439 is 9341011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1101439 - 2³ = 1101431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550719 + 550720.

It is an arithmetic number, because the mean of its divisors is an integer number (550720).

2^1101439 is an apocalyptic number.

1101439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101439 is an equidigital number, since it uses as much as digits as its factorization.

1101439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1101439 is about 1049.4946402912. The cubic root of 1101439 is about 103.2730056005.

It can be divided in two parts, 1101 and 439, that added together give a triangular number (1540 = T₅₅).

The spelling of 1101439 in words is "one million, one hundred one thousand, four hundred thirty-nine".