89138389 has 2 divisors, whose sum is σ = 89138390. Its totient is φ = 89138388.

The previous prime is 89138377. The next prime is 89138393. The reversal of 89138389 is 98383198.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88172100 + 966289 = 9390^2 + 983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89138389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89138339) 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, 44569194 + 44569195.

It is an arithmetic number, because the mean of its divisors is an integer number (44569195).

Almost surely, 2^89138389 is an apocalyptic number.

It is an amenable number.

89138389 is a deficient number, since it is larger than the sum of its proper divisors (1).

89138389 is an equidigital number, since it uses as much as digits as its factorization.

89138389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 49.

The square root of 89138389 is about 9441.3128853989. The cubic root of 89138389 is about 446.7058023060.

The spelling of 89138389 in words is "eighty-nine million, one hundred thirty-eight thousand, three hundred eighty-nine".