89888857 has 2 divisors, whose sum is σ = 89888858. Its totient is φ = 89888856.

The previous prime is 89888849. The next prime is 89888927. The reversal of 89888857 is 75888898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83832336 + 6056521 = 9156^2 + 2461^2 .

It is a cyclic number.

It is not a de Polignac number, because 89888857 - 2³ = 89888849 is a prime.

It is a super-2 number, since 2×89888857² = 16160013225532898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 89888795 and 89888804.

It is not a weakly prime, because it can be changed into another prime (89888657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44944428 + 44944429.

It is an arithmetic number, because the mean of its divisors is an integer number (44944429).

Almost surely, 2^89888857 is an apocalyptic number.

It is an amenable number.

89888857 is a deficient number, since it is larger than the sum of its proper divisors (1).

89888857 is an equidigital number, since it uses as much as digits as its factorization.

89888857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10321920, while the sum is 61.

The square root of 89888857 is about 9480.9734204880. The cubic root of 89888857 is about 447.9559257901.

The spelling of 89888857 in words is "eighty-nine million, eight hundred eighty-eight thousand, eight hundred fifty-seven".