89868191 has 8 divisors (see below), whose sum is σ = 102792864. Its totient is φ = 76965120.

The previous prime is 89868161. The next prime is 89868193. The reversal of 89868191 is 19186898.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89868191 - 2¹⁴ = 89851807 is a prime.

It is a super-2 number, since 2×89868191² = 16152583507224962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89868193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4811 + ... + 14243.

It is an arithmetic number, because the mean of its divisors is an integer number (12849108).

Almost surely, 2^89868191 is an apocalyptic number.

89868191 is a deficient number, since it is larger than the sum of its proper divisors (12924673).

89868191 is a wasteful number, since it uses less digits than its factorization.

89868191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10801.

The product of its digits is 248832, while the sum is 50.

The square root of 89868191 is about 9479.8834908452. The cubic root of 89868191 is about 447.9215938865.

The spelling of 89868191 in words is "eighty-nine million, eight hundred sixty-eight thousand, one hundred ninety-one".