89497913 has 2 divisors, whose sum is σ = 89497914. Its totient is φ = 89497912.

The previous prime is 89497907. The next prime is 89497949. The reversal of 89497913 is 31979498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89340304 + 157609 = 9452^2 + 397^2 .

It is a cyclic number.

It is not a de Polignac number, because 89497913 - 2⁴ = 89497897 is a prime.

It is not a weakly prime, because it can be changed into another prime (89497963) 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, 44748956 + 44748957.

It is an arithmetic number, because the mean of its divisors is an integer number (44748957).

Almost surely, 2^89497913 is an apocalyptic number.

It is an amenable number.

89497913 is a deficient number, since it is larger than the sum of its proper divisors (1).

89497913 is an equidigital number, since it uses as much as digits as its factorization.

89497913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 50.

The square root of 89497913 is about 9460.3336621918. Note that the first 3 decimals coincide. The cubic root of 89497913 is about 447.3055664179.

The spelling of 89497913 in words is "eighty-nine million, four hundred ninety-seven thousand, nine hundred thirteen".