89378865 has 24 divisors (see below), whose sum is σ = 159113448. Its totient is φ = 46379520.

The previous prime is 89378857. The next prime is 89378881. The reversal of 89378865 is 56887398.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20223009 + 69155856 = 4497^2 + 8316^2 .

It is not a de Polignac number, because 89378865 - 2³ = 89378857 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25176 + ... + 28505.

It is an arithmetic number, because the mean of its divisors is an integer number (6629727).

Almost surely, 2^89378865 is an apocalyptic number.

It is an amenable number.

89378865 is a deficient number, since it is larger than the sum of its proper divisors (69734583).

89378865 is a wasteful number, since it uses less digits than its factorization.

89378865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53729 (or 53726 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 89378865 is about 9454.0396127793. The cubic root of 89378865 is about 447.1071466643.

The spelling of 89378865 in words is "eighty-nine million, three hundred seventy-eight thousand, eight hundred sixty-five".