89644487739 has 8 divisors (see below), whose sum is σ = 123381660672. Its totient is φ = 57835153320.

The previous prime is 89644487707. The next prime is 89644487759. The reversal of 89644487739 is 93778444698.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89644487739 - 2⁵ = 89644487707 is a prime.

It is a super-2 number, since 2×89644487739² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89644487759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481959519 + ... + 481959704.

It is an arithmetic number, because the mean of its divisors is an integer number (15422707584).

Almost surely, 2^89644487739 is an apocalyptic number.

89644487739 is a deficient number, since it is larger than the sum of its proper divisors (33737172933).

89644487739 is a wasteful number, since it uses less digits than its factorization.

89644487739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963919257.

The product of its digits is 292626432, while the sum is 69.

The spelling of 89644487739 in words is "eighty-nine billion, six hundred forty-four million, four hundred eighty-seven thousand, seven hundred thirty-nine".