89771039 has 2 divisors, whose sum is σ = 89771040. Its totient is φ = 89771038.

The previous prime is 89771027. The next prime is 89771041. The reversal of 89771039 is 93017798.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89771039 is a prime.

Together with 89771041, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89771069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44885519 + 44885520.

It is an arithmetic number, because the mean of its divisors is an integer number (44885520).

Almost surely, 2^89771039 is an apocalyptic number.

89771039 is a deficient number, since it is larger than the sum of its proper divisors (1).

89771039 is an equidigital number, since it uses as much as digits as its factorization.

89771039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 89771039 is about 9474.7579916323. The cubic root of 89771039 is about 447.7601271548.

The spelling of 89771039 in words is "eighty-nine million, seven hundred seventy-one thousand, thirty-nine".