89208913 has 2 divisors, whose sum is σ = 89208914. Its totient is φ = 89208912.

The previous prime is 89208869. The next prime is 89208919. The reversal of 89208913 is 31980298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76335169 + 12873744 = 8737^2 + 3588^2 .

It is a cyclic number.

It is not a de Polignac number, because 89208913 - 2¹³ = 89200721 is a prime.

It is not a weakly prime, because it can be changed into another prime (89208919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44604456 + 44604457.

It is an arithmetic number, because the mean of its divisors is an integer number (44604457).

Almost surely, 2^89208913 is an apocalyptic number.

It is an amenable number.

89208913 is a deficient number, since it is larger than the sum of its proper divisors (1).

89208913 is an equidigital number, since it uses as much as digits as its factorization.

89208913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 89208913 is about 9445.0470088825. The cubic root of 89208913 is about 446.8235786302.

The spelling of 89208913 in words is "eighty-nine million, two hundred eight thousand, nine hundred thirteen".