2009067971 has 2 divisors, whose sum is σ = 2009067972. Its totient is φ = 2009067970.

The previous prime is 2009067913. The next prime is 2009067997. The reversal of 2009067971 is 1797609002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2009067971 is a prime.

It is a super-2 number, since 2×2009067971² = 8072708224196113682, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2009067271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004533985 + 1004533986.

It is an arithmetic number, because the mean of its divisors is an integer number (1004533986).

Almost surely, 2^2009067971 is an apocalyptic number.

2009067971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009067971 is an equidigital number, since it uses as much as digits as its factorization.

2009067971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 2009067971 is about 44822.6278903859. The cubic root of 2009067971 is about 1261.8223339092.

The spelling of 2009067971 in words is "two billion, nine million, sixty-seven thousand, nine hundred seventy-one".