89855657 has 2 divisors, whose sum is σ = 89855658. Its totient is φ = 89855656.

The previous prime is 89855621. The next prime is 89855669. The reversal of 89855657 is 75655898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57320041 + 32535616 = 7571^2 + 5704^2 .

It is a cyclic number.

It is not a de Polignac number, because 89855657 - 2¹⁶ = 89790121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89855599 and 89855608.

It is not a weakly prime, because it can be changed into another prime (89855677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44927828 + 44927829.

It is an arithmetic number, because the mean of its divisors is an integer number (44927829).

Almost surely, 2^89855657 is an apocalyptic number.

It is an amenable number.

89855657 is a deficient number, since it is larger than the sum of its proper divisors (1).

89855657 is an equidigital number, since it uses as much as digits as its factorization.

89855657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024000, while the sum is 53.

The square root of 89855657 is about 9479.2223837190. Note that the first 3 decimals coincide. The cubic root of 89855657 is about 447.9007689049.

The spelling of 89855657 in words is "eighty-nine million, eight hundred fifty-five thousand, six hundred fifty-seven".