989651474100 has 288 divisors, whose sum is σ = 3397432550400. Its totient is φ = 246586636800.

The previous prime is 989651474099. The next prime is 989651474107. The reversal of 989651474100 is 1474156989.

989651474100 is a `hidden beast` number, since 9 + 8 + 9 + 65 + 1 + 474 + 100 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989651474107) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2223442 + ... + 2631158.

It is an arithmetic number, because the mean of its divisors is an integer number (11796640800).

Almost surely, 2^989651474100 is an apocalyptic number.

989651474100 is a gapful number since it is divisible by the number (90) 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 989651474100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698716275200).

989651474100 is an abundant number, since it is smaller than the sum of its proper divisors (2407781076300).

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

989651474100 is a wasteful number, since it uses less digits than its factorization.

989651474100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407800 (or 407787 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 989651474100 in words is "nine hundred eighty-nine billion, six hundred fifty-one million, four hundred seventy-four thousand, one hundred".