89564631293 has 2 divisors, whose sum is σ = 89564631294. Its totient is φ = 89564631292.

The previous prime is 89564631253. The next prime is 89564631347. The reversal of 89564631293 is 39213646598.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85195685689 + 4368945604 = 291883^2 + 66098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89564631293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89564631253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44782315646 + 44782315647.

It is an arithmetic number, because the mean of its divisors is an integer number (44782315647).

Almost surely, 2^89564631293 is an apocalyptic number.

It is an amenable number.

89564631293 is a deficient number, since it is larger than the sum of its proper divisors (1).

89564631293 is an equidigital number, since it uses as much as digits as its factorization.

89564631293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 56.

The spelling of 89564631293 in words is "eighty-nine billion, five hundred sixty-four million, six hundred thirty-one thousand, two hundred ninety-three".