89456538738 has 64 divisors (see below), whose sum is σ = 211197837312. Its totient is φ = 24719307840.

The previous prime is 89456538737. The next prime is 89456538791. The reversal of 89456538738 is 83783565498.

It is not an unprimeable number, because it can be changed into a prime (89456538737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2183995 + ... + 2224577.

It is an arithmetic number, because the mean of its divisors is an integer number (3299966208).

Almost surely, 2^89456538738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89456538738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105598918656).

89456538738 is an abundant number, since it is smaller than the sum of its proper divisors (121741298574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89456538738 is a wasteful number, since it uses less digits than its factorization.

89456538738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42319.

The product of its digits is 174182400, while the sum is 66.

The spelling of 89456538738 in words is "eighty-nine billion, four hundred fifty-six million, five hundred thirty-eight thousand, seven hundred thirty-eight".