71941189 has 4 divisors (see below), whose sum is σ = 72653580. Its totient is φ = 71228800.

The previous prime is 71941157. The next prime is 71941211. The reversal of 71941189 is 98114917.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52316289 + 19624900 = 7233^2 + 4430^2 .

It is a cyclic number.

It is not a de Polignac number, because 71941189 - 2⁵ = 71941157 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 (71941589) 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, 356044 + ... + 356245.

It is an arithmetic number, because the mean of its divisors is an integer number (18163395).

Almost surely, 2^71941189 is an apocalyptic number.

It is an amenable number.

71941189 is a deficient number, since it is larger than the sum of its proper divisors (712391).

71941189 is a wasteful number, since it uses less digits than its factorization.

71941189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712390.

The product of its digits is 18144, while the sum is 40.

The square root of 71941189 is about 8481.8151948743. The cubic root of 71941189 is about 415.9034635618.

The spelling of 71941189 in words is "seventy-one million, nine hundred forty-one thousand, one hundred eighty-nine".