1119999971 has 2 divisors, whose sum is σ = 1119999972. Its totient is φ = 1119999970.

The previous prime is 1119999949. The next prime is 1119999977. The reversal of 1119999971 is 1799999111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1119999971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1119999977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559999985 + 559999986.

It is an arithmetic number, because the mean of its divisors is an integer number (559999986).

Almost surely, 2^1119999971 is an apocalyptic number.

1119999971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1119999971 is an equidigital number, since it uses as much as digits as its factorization.

1119999971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 413343, while the sum is 56.

The square root of 1119999971 is about 33466.4006280926. The cubic root of 1119999971 is about 1038.4988114070.

The spelling of 1119999971 in words is "one billion, one hundred nineteen million, nine hundred ninety-nine thousand, nine hundred seventy-one".