71879369 has 2 divisors, whose sum is σ = 71879370. Its totient is φ = 71879368.

The previous prime is 71879329. The next prime is 71879387. The reversal of 71879369 is 96397817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70341769 + 1537600 = 8387^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 71879369 - 2⁸ = 71879113 is a prime.

It is a super-2 number, since 2×71879369² = 10333287375676322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71879329) 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, 35939684 + 35939685.

It is an arithmetic number, because the mean of its divisors is an integer number (35939685).

Almost surely, 2^71879369 is an apocalyptic number.

It is an amenable number.

71879369 is a deficient number, since it is larger than the sum of its proper divisors (1).

71879369 is an equidigital number, since it uses as much as digits as its factorization.

71879369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 50.

The square root of 71879369 is about 8478.1701445536. The cubic root of 71879369 is about 415.7842990023.

The spelling of 71879369 in words is "seventy-one million, eight hundred seventy-nine thousand, three hundred sixty-nine".