9998523126 has 24 divisors (see below), whose sum is σ = 21886805304. Its totient is φ = 3298481280.

The previous prime is 9998523107. The next prime is 9998523127. The reversal of 9998523126 is 6213258999.

It is a happy number.

9998523126 is a `hidden beast` number, since 9 + 9 + 98 + 523 + 1 + 26 = 666.

It is a super-3 number, since 3×9998523126³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998523127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2861520 + ... + 2865011.

It is an arithmetic number, because the mean of its divisors is an integer number (911950221).

Almost surely, 2^9998523126 is an apocalyptic number.

9998523126 is an abundant number, since it is smaller than the sum of its proper divisors (11888282178).

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

9998523126 is a wasteful number, since it uses less digits than its factorization.

9998523126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5726636 (or 5726633 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 9998523126 is about 99992.6153573353. The cubic root of 9998523126 is about 2154.3286238576.

The spelling of 9998523126 in words is "nine billion, nine hundred ninety-eight million, five hundred twenty-three thousand, one hundred twenty-six".