1111401439 has 2 divisors, whose sum is σ = 1111401440. Its totient is φ = 1111401438.

The previous prime is 1111401437. The next prime is 1111401463. The reversal of 1111401439 is 9341041111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111401439 - 2¹ = 1111401437 is a prime.

It is a super-2 number, since 2×1111401439² = 2470426317222541442, which contains 22 as substring.

Together with 1111401437, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111401437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555700719 + 555700720.

It is an arithmetic number, because the mean of its divisors is an integer number (555700720).

Almost surely, 2^1111401439 is an apocalyptic number.

1111401439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111401439 is an equidigital number, since it uses as much as digits as its factorization.

1111401439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1111401439 is about 33337.6879672241. The cubic root of 1111401439 is about 1035.8343724205.

The spelling of 1111401439 in words is "one billion, one hundred eleven million, four hundred one thousand, four hundred thirty-nine".