89857305 has 12 divisors (see below), whose sum is σ = 155752740. Its totient is φ = 47923872.

The previous prime is 89857277. The next prime is 89857309. The reversal of 89857305 is 50375898.

It can be written as a sum of positive squares in 2 ways, for example, as 13329801 + 76527504 = 3651^2 + 8748^2 .

It is not a de Polignac number, because 89857305 - 2⁶ = 89857241 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: 1996829 = 89857305 / (8 + 9 + 8 + 5 + 7 + 3 + 0 + 5).

It is not an unprimeable number, because it can be changed into a prime (89857309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 998370 + ... + 998459.

It is an arithmetic number, because the mean of its divisors is an integer number (12979395).

Almost surely, 2^89857305 is an apocalyptic number.

It is an amenable number.

89857305 is a deficient number, since it is larger than the sum of its proper divisors (65895435).

89857305 is a wasteful number, since it uses less digits than its factorization.

89857305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996840 (or 1996837 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 89857305 is about 9479.3093102821. The cubic root of 89857305 is about 447.9035071334.

It can be divided in two parts, 8985 and 7305, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 89857305 in words is "eighty-nine million, eight hundred fifty-seven thousand, three hundred five".