89408889547 has 2 divisors, whose sum is σ = 89408889548. Its totient is φ = 89408889546.

The previous prime is 89408889523. The next prime is 89408889617. The reversal of 89408889547 is 74598880498.

It is an a-pointer prime, because the next prime (89408889617) can be obtained adding 89408889547 to its sum of digits (70).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89408889547 - 2⁷ = 89408889419 is a prime.

It is not a weakly prime, because it can be changed into another prime (89408881547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44704444773 + 44704444774.

It is an arithmetic number, because the mean of its divisors is an integer number (44704444774).

Almost surely, 2^89408889547 is an apocalyptic number.

89408889547 is a deficient number, since it is larger than the sum of its proper divisors (1).

89408889547 is an equidigital number, since it uses as much as digits as its factorization.

89408889547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 185794560, while the sum is 70.

The spelling of 89408889547 in words is "eighty-nine billion, four hundred eight million, eight hundred eighty-nine thousand, five hundred forty-seven".