989249191936 has 240 divisors, whose sum is σ = 2243716392960. Its totient is φ = 433662197760.

The previous prime is 989249191901. The next prime is 989249191937. The reversal of 989249191936 is 639191942989.

It is a happy number.

It is a super-2 number, since 2×989249191936² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (989249191937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221951820 + ... + 221956276.

It is an arithmetic number, because the mean of its divisors is an integer number (9348818304).

Almost surely, 2^989249191936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989249191936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1121858196480).

989249191936 is an abundant number, since it is smaller than the sum of its proper divisors (1254467201024).

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

989249191936 is a wasteful number, since it uses less digits than its factorization.

989249191936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4558 (or 4532 counting only the distinct ones).

The product of its digits is 68024448, while the sum is 70.

The spelling of 989249191936 in words is "nine hundred eighty-nine billion, two hundred forty-nine million, one hundred ninety-one thousand, nine hundred thirty-six".