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9947202069 = 371924930331
BaseRepresentation
bin10010100001110011…
…00100001000010101
3221200020102012222110
421100321210020111
5130332440431234
64323015021233
7501333552060
oct112071441025
927606365873
109947202069
114244a33162
121b1736a819
13c26a926ac
146a513b8d7
153d342e1e9
hex250e64215

9947202069 has 16 divisors (see below), whose sum is σ = 15955412480. Its totient is φ = 5384951280.

The previous prime is 9947202011. The next prime is 9947202077. The reversal of 9947202069 is 9602027499.

It is not a de Polignac number, because 9947202069 - 27 = 9947201941 is a prime.

It is a super-2 number, since 2×99472020692 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9947202079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12464767 + ... + 12465564.

It is an arithmetic number, because the mean of its divisors is an integer number (997213280).

Almost surely, 29947202069 is an apocalyptic number.

It is an amenable number.

9947202069 is a deficient number, since it is larger than the sum of its proper divisors (6008210411).

9947202069 is a wasteful number, since it uses less digits than its factorization.

9947202069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24930360.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 9947202069 is about 99735.6609693845. The cubic root of 9947202069 is about 2150.6363408650.

The spelling of 9947202069 in words is "nine billion, nine hundred forty-seven million, two hundred two thousand, sixty-nine".

Divisors: 1 3 7 19 21 57 133 399 24930331 74790993 174512317 473676289 523536951 1421028867 3315734023 9947202069