89139191 has 4 divisors (see below), whose sum is σ = 93014832. Its totient is φ = 85263552.

The previous prime is 89139181. The next prime is 89139209. The reversal of 89139191 is 19193198.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 89139191 - 2²² = 84944887 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 (89139161) 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, 1937786 + ... + 1937831.

It is an arithmetic number, because the mean of its divisors is an integer number (23253708).

Almost surely, 2^89139191 is an apocalyptic number.

89139191 is a deficient number, since it is larger than the sum of its proper divisors (3875641).

89139191 is a wasteful number, since it uses less digits than its factorization.

89139191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875640.

The product of its digits is 17496, while the sum is 41.

The square root of 89139191 is about 9441.3553582100. The cubic root of 89139191 is about 446.7071420092.

The spelling of 89139191 in words is "eighty-nine million, one hundred thirty-nine thousand, one hundred ninety-one".