89853691 has 4 divisors (see below), whose sum is σ = 89905384. Its totient is φ = 89802000.

The previous prime is 89853683. The next prime is 89853727. The reversal of 89853691 is 19635898.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19635898 = 2 ⋅9817949.

It is a cyclic number.

It is not a de Polignac number, because 89853691 - 2³ = 89853683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89853601) 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 3 ways as a sum of consecutive naturals, for example, 23145 + ... + 26746.

It is an arithmetic number, because the mean of its divisors is an integer number (22476346).

Almost surely, 2^89853691 is an apocalyptic number.

89853691 is a deficient number, since it is larger than the sum of its proper divisors (51693).

89853691 is a wasteful number, since it uses less digits than its factorization.

89853691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51692.

The product of its digits is 466560, while the sum is 49.

The square root of 89853691 is about 9479.1186826624. The cubic root of 89853691 is about 447.8975022609.

The spelling of 89853691 in words is "eighty-nine million, eight hundred fifty-three thousand, six hundred ninety-one".