71092189 has 6 divisors (see below), whose sum is σ = 82699134. Its totient is φ = 60936120.

The previous prime is 71092171. The next prime is 71092211. The reversal of 71092189 is 98129017.

It can be written as a sum of positive squares in only one way, i.e., 66504025 + 4588164 = 8155^2 + 2142^2 .

It is not a de Polignac number, because 71092189 - 2⁹ = 71091677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71090189) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 725382 + ... + 725479.

It is an arithmetic number, because the mean of its divisors is an integer number (13783189).

Almost surely, 2^71092189 is an apocalyptic number.

It is an amenable number.

71092189 is a deficient number, since it is larger than the sum of its proper divisors (11606945).

71092189 is a wasteful number, since it uses less digits than its factorization.

71092189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450875 (or 1450868 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 71092189 is about 8431.6184092972. The cubic root of 71092189 is about 414.2609170765.

The spelling of 71092189 in words is "seventy-one million, ninety-two thousand, one hundred eighty-nine".