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9990769 is a prime number
BaseRepresentation
bin100110000111…
…001001110001
3200210120202111
4212013021301
510024201034
6554045321
7150630415
oct46071161
920716674
109990769
115704238
123419841
1320ba5c9
141480d45
15d25364
hex987271

9990769 has 2 divisors, whose sum is σ = 9990770. Its totient is φ = 9990768.

The previous prime is 9990767. The next prime is 9990779. The reversal of 9990769 is 9670999.

It is a happy number.

9990769 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 3564544 = 2535^2 + 1888^2 .

It is a cyclic number.

It is not a de Polignac number, because 9990769 - 21 = 9990767 is a prime.

It is a super-2 number, since 2×99907692 = 199630930422722, which contains 22 as substring.

Together with 9990767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9990767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4995384 + 4995385.

It is an arithmetic number, because the mean of its divisors is an integer number (4995385).

Almost surely, 29990769 is an apocalyptic number.

It is an amenable number.

9990769 is a deficient number, since it is larger than the sum of its proper divisors (1).

9990769 is an equidigital number, since it uses as much as digits as its factorization.

9990769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 275562, while the sum is 49.

The square root of 9990769 is about 3160.8177739313. The cubic root of 9990769 is about 215.3771566393.

The spelling of 9990769 in words is "nine million, nine hundred ninety thousand, seven hundred sixty-nine".