71290859 has 4 divisors (see below), whose sum is σ = 71322840. Its totient is φ = 71258880.

The previous prime is 71290837. The next prime is 71290871. The reversal of 71290859 is 95809217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95809217 = 7 ⋅13687031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71290859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71290889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12374 + ... + 17195.

It is an arithmetic number, because the mean of its divisors is an integer number (17830710).

Almost surely, 2^71290859 is an apocalyptic number.

71290859 is a deficient number, since it is larger than the sum of its proper divisors (31981).

71290859 is a wasteful number, since it uses less digits than its factorization.

71290859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31980.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 71290859 is about 8443.3914394632. The cubic root of 71290859 is about 414.6464478062.

The spelling of 71290859 in words is "seventy-one million, two hundred ninety thousand, eight hundred fifty-nine".