89931000000 has 392 divisors, whose sum is σ = 307336066048. Its totient is φ = 23184000000.

The previous prime is 89930999999. The next prime is 89931000001. The reversal of 89931000000 is 13998.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (89930999999) and next prime (89931000001).

It is a super-2 number, since 2×89931000000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (89931000001) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 92999517 + ... + 93000483.

Almost surely, 2^89931000000 is an apocalyptic number.

89931000000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89931000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153668033024).

89931000000 is an abundant number, since it is smaller than the sum of its proper divisors (217405066048).

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

89931000000 is an frugal number, since it uses more digits than its factorization.

89931000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

Adding to 89931000000 its reverse (13998), we get a palindrome (89931013998).

The spelling of 89931000000 in words is "eighty-nine billion, nine hundred thirty-one million", and thus it is an aban number.