1111225439 has 2 divisors, whose sum is σ = 1111225440. Its totient is φ = 1111225438.

The previous prime is 1111225429. The next prime is 1111225441. The reversal of 1111225439 is 9345221111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111225439 is a prime.

Together with 1111225441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111225429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555612719 + 555612720.

It is an arithmetic number, because the mean of its divisors is an integer number (555612720).

Almost surely, 2^1111225439 is an apocalyptic number.

1111225439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111225439 is an equidigital number, since it uses as much as digits as its factorization.

1111225439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The square root of 1111225439 is about 33335.0482075548. The cubic root of 1111225439 is about 1035.7796917662.

The spelling of 1111225439 in words is "one billion, one hundred eleven million, two hundred twenty-five thousand, four hundred thirty-nine".