2047997971 has 2 divisors, whose sum is σ = 2047997972. Its totient is φ = 2047997970.

The previous prime is 2047997849. The next prime is 2047997977. The reversal of 2047997971 is 1797997402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2047997971 - 2⁷ = 2047997843 is a prime.

It is not a weakly prime, because it can be changed into another prime (2047997977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023998985 + 1023998986.

It is an arithmetic number, because the mean of its divisors is an integer number (1023998986).

Almost surely, 2^2047997971 is an apocalyptic number.

2047997971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2047997971 is an equidigital number, since it uses as much as digits as its factorization.

2047997971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000376, while the sum is 55.

The square root of 2047997971 is about 45254.8115784388. The cubic root of 2047997971 is about 1269.9204221946.

The spelling of 2047997971 in words is "two billion, forty-seven million, nine hundred ninety-seven thousand, nine hundred seventy-one".