89642217539 has 8 divisors (see below), whose sum is σ = 104539029600. Its totient is φ = 76836186168.

The previous prime is 89642217517. The next prime is 89642217541. The reversal of 89642217539 is 93571224698.

It is a de Polignac number, because none of the positive numbers 2^k-89642217539 is a prime.

It is a super-4 number, since 4×89642217539⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89642217739) 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 in 7 ways as a sum of consecutive naturals, for example, 130673444 + ... + 130674129.

It is an arithmetic number, because the mean of its divisors is an integer number (13067378700).

Almost surely, 2^89642217539 is an apocalyptic number.

89642217539 is a deficient number, since it is larger than the sum of its proper divisors (14896812061).

89642217539 is an equidigital number, since it uses as much as digits as its factorization.

89642217539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261347594 (or 261347580 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The spelling of 89642217539 in words is "eighty-nine billion, six hundred forty-two million, two hundred seventeen thousand, five hundred thirty-nine".