989247975936 has 640 divisors, whose sum is σ = 3235678617600. Its totient is φ = 264677621760.

The previous prime is 989247975889. The next prime is 989247975983. The reversal of 989247975936 is 639579742989.

It is an interprime number because it is at equal distance from previous prime (989247975889) and next prime (989247975983).

It is a super-2 number, since 2×989247975936² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 594856641 + ... + 594858303.

It is an arithmetic number, because the mean of its divisors is an integer number (5055747840).

Almost surely, 2^989247975936 is an apocalyptic number.

989247975936 is a gapful number since it is divisible by the number (96) 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 989247975936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1617839308800).

989247975936 is an abundant number, since it is smaller than the sum of its proper divisors (2246430641664).

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

989247975936 is a wasteful number, since it uses less digits than its factorization.

989247975936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840 (or 1824 counting only the distinct ones).

The product of its digits is 1851776640, while the sum is 78.

The spelling of 989247975936 in words is "nine hundred eighty-nine billion, two hundred forty-seven million, nine hundred seventy-five thousand, nine hundred thirty-six".