9809900534 has 16 divisors (see below), whose sum is σ = 16834866336. Its totient is φ = 4199769600.

The previous prime is 9809900533. The next prime is 9809900543. The reversal of 9809900534 is 4350099089.

It is a super-4 number, since 4×9809900534⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9809900533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359147 + ... + 385494.

It is an arithmetic number, because the mean of its divisors is an integer number (1052179146).

Almost surely, 2^9809900534 is an apocalyptic number.

9809900534 is a deficient number, since it is larger than the sum of its proper divisors (7024965802).

9809900534 is a wasteful number, since it uses less digits than its factorization.

9809900534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745591.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 9809900534 is about 99044.9419909972. The cubic root of 9809900534 is about 2140.6953612702.

The spelling of 9809900534 in words is "nine billion, eight hundred nine million, nine hundred thousand, five hundred thirty-four".