89838857 has 2 divisors, whose sum is σ = 89838858. Its totient is φ = 89838856.

The previous prime is 89838823. The next prime is 89838901. The reversal of 89838857 is 75883898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71554681 + 18284176 = 8459^2 + 4276^2 .

It is a cyclic number.

It is not a de Polignac number, because 89838857 - 2⁸ = 89838601 is a prime.

It is not a weakly prime, because it can be changed into another prime (89838157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44919428 + 44919429.

It is an arithmetic number, because the mean of its divisors is an integer number (44919429).

Almost surely, 2^89838857 is an apocalyptic number.

It is an amenable number.

89838857 is a deficient number, since it is larger than the sum of its proper divisors (1).

89838857 is an equidigital number, since it uses as much as digits as its factorization.

89838857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 56.

The square root of 89838857 is about 9478.3361936576. The cubic root of 89838857 is about 447.8728530148.

The spelling of 89838857 in words is "eighty-nine million, eight hundred thirty-eight thousand, eight hundred fifty-seven".