71894879 has 16 divisors (see below), whose sum is σ = 86887680. Its totient is φ = 58112640.

The previous prime is 71894873. The next prime is 71894881. The reversal of 71894879 is 97849817.

It is not a de Polignac number, because 71894879 - 2¹² = 71890783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71894879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71894873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30932 + ... + 33174.

It is an arithmetic number, because the mean of its divisors is an integer number (5430480).

Almost surely, 2^71894879 is an apocalyptic number.

71894879 is a deficient number, since it is larger than the sum of its proper divisors (14992801).

71894879 is a wasteful number, since it uses less digits than its factorization.

71894879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510.

The product of its digits is 1016064, while the sum is 53.

The square root of 71894879 is about 8479.0847973116. The cubic root of 71894879 is about 415.8142025791.

The spelling of 71894879 in words is "seventy-one million, eight hundred ninety-four thousand, eight hundred seventy-nine".