71417869 has 2 divisors, whose sum is σ = 71417870. Its totient is φ = 71417868.

The previous prime is 71417861. The next prime is 71417873. The reversal of 71417869 is 96871417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67864644 + 3553225 = 8238^2 + 1885^2 .

It is an emirp because it is prime and its reverse (96871417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71417869 - 2³ = 71417861 is a prime.

It is a super-2 number, since 2×71417869² = 10201024025002322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71417861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35708934 + 35708935.

It is an arithmetic number, because the mean of its divisors is an integer number (35708935).

Almost surely, 2^71417869 is an apocalyptic number.

It is an amenable number.

71417869 is a deficient number, since it is larger than the sum of its proper divisors (1).

71417869 is an equidigital number, since it uses as much as digits as its factorization.

71417869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 43.

The square root of 71417869 is about 8450.9093593530. The cubic root of 71417869 is about 414.8925429432.

The spelling of 71417869 in words is "seventy-one million, four hundred seventeen thousand, eight hundred sixty-nine".