71283479 has 4 divisors (see below), whose sum is σ = 73741560. Its totient is φ = 68825400.

The previous prime is 71283469. The next prime is 71283481. The reversal of 71283479 is 97438217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97438217 = 4447 ⋅21911.

It is a cyclic number.

It is not a de Polignac number, because 71283479 - 2²⁰ = 70234903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71283409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1228997 + ... + 1229054.

It is an arithmetic number, because the mean of its divisors is an integer number (18435390).

Almost surely, 2^71283479 is an apocalyptic number.

71283479 is a deficient number, since it is larger than the sum of its proper divisors (2458081).

71283479 is a wasteful number, since it uses less digits than its factorization.

71283479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458080.

The product of its digits is 84672, while the sum is 41.

The square root of 71283479 is about 8442.9543999716. The cubic root of 71283479 is about 414.6321393033.

The spelling of 71283479 in words is "seventy-one million, two hundred eighty-three thousand, four hundred seventy-nine".