71461979 has 2 divisors, whose sum is σ = 71461980. Its totient is φ = 71461978.

The previous prime is 71461939. The next prime is 71461981. The reversal of 71461979 is 97916417.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71461979 - 2⁸ = 71461723 is a prime.

Together with 71461981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71461939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35730989 + 35730990.

It is an arithmetic number, because the mean of its divisors is an integer number (35730990).

Almost surely, 2^71461979 is an apocalyptic number.

71461979 is a deficient number, since it is larger than the sum of its proper divisors (1).

71461979 is an equidigital number, since it uses as much as digits as its factorization.

71461979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 44.

The square root of 71461979 is about 8453.5187348228. The cubic root of 71461979 is about 414.9779424092.

The spelling of 71461979 in words is "seventy-one million, four hundred sixty-one thousand, nine hundred seventy-nine".