1111089971 has 2 divisors, whose sum is σ = 1111089972. Its totient is φ = 1111089970.

The previous prime is 1111089949. The next prime is 1111090027. The reversal of 1111089971 is 1799801111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111089971 - 2²² = 1106895667 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111089271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555544985 + 555544986.

It is an arithmetic number, because the mean of its divisors is an integer number (555544986).

Almost surely, 2^1111089971 is an apocalyptic number.

1111089971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111089971 is an equidigital number, since it uses as much as digits as its factorization.

1111089971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 38.

The square root of 1111089971 is about 33333.0162301584. The cubic root of 1111089971 is about 1035.7375998856.

The spelling of 1111089971 in words is "one billion, one hundred eleven million, eighty-nine thousand, nine hundred seventy-one".