1111489 has 2 divisors, whose sum is σ = 1111490. Its totient is φ = 1111488.

The previous prime is 1111457. The next prime is 1111493. The reversal of 1111489 is 9841111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 935089 + 176400 = 967^2 + 420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111489 - 2⁵ = 1111457 is a prime.

It is an Ulam number.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1111499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555744 + 555745.

It is an arithmetic number, because the mean of its divisors is an integer number (555745).

2^1111489 is an apocalyptic number.

It is an amenable number.

1111489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111489 is an equidigital number, since it uses as much as digits as its factorization.

1111489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 25.

The square root of 1111489 is about 1054.2717865902. The cubic root of 1111489 is about 103.5861574206.

It can be divided in two parts, 1111 and 489, that added together give a square (1600 = 40²).

The spelling of 1111489 in words is "one million, one hundred eleven thousand, four hundred eighty-nine".