89087805 has 12 divisors (see below), whose sum is σ = 154418940. Its totient is φ = 47513472.

The previous prime is 89087767. The next prime is 89087821. The reversal of 89087805 is 50878098.

It can be written as a sum of positive squares in 2 ways, for example, as 57244356 + 31843449 = 7566^2 + 5643^2 .

It is not a de Polignac number, because 89087805 - 2⁸ = 89087549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1979729 = 89087805 / (8 + 9 + 0 + 8 + 7 + 8 + 0 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 989820 + ... + 989909.

It is an arithmetic number, because the mean of its divisors is an integer number (12868245).

Almost surely, 2^89087805 is an apocalyptic number.

It is an amenable number.

89087805 is a deficient number, since it is larger than the sum of its proper divisors (65331135).

89087805 is a wasteful number, since it uses less digits than its factorization.

89087805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979740 (or 1979737 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 89087805 is about 9438.6336405223. The cubic root of 89087805 is about 446.6212878703.

The spelling of 89087805 in words is "eighty-nine million, eighty-seven thousand, eight hundred five".