71942889 has 16 divisors (see below), whose sum is σ = 99403200. Its totient is φ = 46253376.

The previous prime is 71942879. The next prime is 71942891. The reversal of 71942889 is 98824917.

It is not a de Polignac number, because 71942889 - 2¹² = 71938793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71942839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5547 + ... + 13215.

It is an arithmetic number, because the mean of its divisors is an integer number (6212700).

Almost surely, 2^71942889 is an apocalyptic number.

It is an amenable number.

71942889 is a deficient number, since it is larger than the sum of its proper divisors (27460311).

71942889 is a wasteful number, since it uses less digits than its factorization.

71942889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7784.

The product of its digits is 290304, while the sum is 48.

The square root of 71942889 is about 8481.9154086798. The cubic root of 71942889 is about 415.9067395261.

The spelling of 71942889 in words is "seventy-one million, nine hundred forty-two thousand, eight hundred eighty-nine".