71879459 has 2 divisors, whose sum is σ = 71879460. Its totient is φ = 71879458.

The previous prime is 71879449. The next prime is 71879461. The reversal of 71879459 is 95497817.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71879459 is a prime.

It is a super-2 number, since 2×71879459² = 10333313252265362, which contains 22 as substring.

Together with 71879461, 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 (71879449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35939729 + 35939730.

It is an arithmetic number, because the mean of its divisors is an integer number (35939730).

Almost surely, 2^71879459 is an apocalyptic number.

71879459 is a deficient number, since it is larger than the sum of its proper divisors (1).

71879459 is an equidigital number, since it uses as much as digits as its factorization.

71879459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 50.

The square root of 71879459 is about 8478.1754523010. The cubic root of 71879459 is about 415.7844725365.

The spelling of 71879459 in words is "seventy-one million, eight hundred seventy-nine thousand, four hundred fifty-nine".