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9764221 is a prime number
BaseRepresentation
bin100101001111…
…110101111101
3200101001222211
4211033311331
54444423341
6545140421
7145665055
oct45176575
920331884
109764221
11556a005
12332a711
13203b45c
141422565
15ccd181
hex94fd7d

9764221 has 2 divisors, whose sum is σ = 9764222. Its totient is φ = 9764220.

The previous prime is 9764219. The next prime is 9764231. The reversal of 9764221 is 1224679.

9764221 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., 5808100 + 3956121 = 2410^2 + 1989^2 .

It is a cyclic number.

It is not a de Polignac number, because 9764221 - 21 = 9764219 is a prime.

Together with 9764219, it forms a pair of twin primes.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9764231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4882110 + 4882111.

It is an arithmetic number, because the mean of its divisors is an integer number (4882111).

Almost surely, 29764221 is an apocalyptic number.

It is an amenable number.

9764221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9764221 is an equidigital number, since it uses as much as digits as its factorization.

9764221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 9764221 is about 3124.7753519253. The cubic root of 9764221 is about 213.7367494037.

The spelling of 9764221 in words is "nine million, seven hundred sixty-four thousand, two hundred twenty-one".