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9980632439 = 127280128057
BaseRepresentation
bin10010100101110010…
…00101110101110111
3221202120022122211022
421102321011311313
5130420020214224
64330211331355
7502220655521
oct112271056567
927676278738
109980632439
114261896968
121b265b0b5b
13c30998b8b
146a9760a11
153d633465e
hex252e45d77

9980632439 has 8 divisors (see below), whose sum is σ = 10063170048. Its totient is φ = 9898156800.

The previous prime is 9980632427. The next prime is 9980632457. The reversal of 9980632439 is 9342360899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9980632439 - 24 = 9980632423 is a prime.

It is a super-2 number, since 2×99806324392 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9980632469) 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, 341699 + ... + 369755.

It is an arithmetic number, because the mean of its divisors is an integer number (1257896256).

Almost surely, 29980632439 is an apocalyptic number.

9980632439 is a deficient number, since it is larger than the sum of its proper divisors (82537609).

9980632439 is a wasteful number, since it uses less digits than its factorization.

9980632439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30985.

The product of its (nonzero) digits is 2519424, while the sum is 53.

The square root of 9980632439 is about 99903.1152617375. The cubic root of 9980632439 is about 2153.0429196289.

The spelling of 9980632439 in words is "nine billion, nine hundred eighty million, six hundred thirty-two thousand, four hundred thirty-nine".

Divisors: 1 127 2801 28057 355727 3563239 78587657 9980632439