89387857 has 4 divisors (see below), whose sum is σ = 96263860. Its totient is φ = 82511856.

The previous prime is 89387827. The next prime is 89387861. The reversal of 89387857 is 75878398.

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 8549776 + 80838081 = 2924^2 + 8991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89387857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89387798 and 89387807.

It is not an unprimeable number, because it can be changed into a prime (89387827) 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, 3437982 + ... + 3438007.

It is an arithmetic number, because the mean of its divisors is an integer number (24065965).

Almost surely, 2^89387857 is an apocalyptic number.

It is an amenable number.

89387857 is a deficient number, since it is larger than the sum of its proper divisors (6876003).

89387857 is a wasteful number, since it uses less digits than its factorization.

89387857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6876002.

The product of its digits is 3386880, while the sum is 55.

The square root of 89387857 is about 9454.5151647242. The cubic root of 89387857 is about 447.1221399652.

The spelling of 89387857 in words is "eighty-nine million, three hundred eighty-seven thousand, eight hundred fifty-seven".