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4238989 is a prime number
BaseRepresentation
bin10000001010111010001101
321222100210121
4100022322031
52041121424
6230504541
751013366
oct20127215
97870717
104238989
1124358a7
121505151
13b555a1
147c4b6d
1558aee4
hex40ae8d

4238989 has 2 divisors, whose sum is σ = 4238990. Its totient is φ = 4238988.

The previous prime is 4238963. The next prime is 4238999. The reversal of 4238989 is 9898324.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3724900 + 514089 = 1930^2 + 717^2 .

It is a cyclic number.

It is not a de Polignac number, because 4238989 - 211 = 4236941 is a prime.

It is a d-powerful number, because it can be written as 47 + 211 + 39 + 87 + 9 + 87 + 94 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4238929) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2119494 + 2119495.

It is an arithmetic number, because the mean of its divisors is an integer number (2119495).

Almost surely, 24238989 is an apocalyptic number.

It is an amenable number.

4238989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4238989 is an equidigital number, since it uses as much as digits as its factorization.

4238989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 4238989 is about 2058.8805210599. The cubic root of 4238989 is about 161.8405813736.

The spelling of 4238989 in words is "four million, two hundred thirty-eight thousand, nine hundred eighty-nine".