2391479971 has 2 divisors, whose sum is σ = 2391479972. Its totient is φ = 2391479970.

The previous prime is 2391479957. The next prime is 2391480019. The reversal of 2391479971 is 1799741932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2391479971 - 2⁹ = 2391479459 is a prime.

It is not a weakly prime, because it can be changed into another prime (2391479921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195739985 + 1195739986.

It is an arithmetic number, because the mean of its divisors is an integer number (1195739986).

Almost surely, 2^2391479971 is an apocalyptic number.

2391479971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391479971 is an equidigital number, since it uses as much as digits as its factorization.

2391479971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 52.

The square root of 2391479971 is about 48902.7603617628. The cubic root of 2391479971 is about 1337.2796916199.

The spelling of 2391479971 in words is "two billion, three hundred ninety-one million, four hundred seventy-nine thousand, nine hundred seventy-one".