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4997989 is a prime number
BaseRepresentation
bin10011000100001101100101
3100101220221201
4103010031211
52234413424
6255042501
760324253
oct23041545
910356851
104997989
112904077
121810431
13105cbb9
149415d3
1568ad44
hex4c4365

4997989 has 2 divisors, whose sum is σ = 4997990. Its totient is φ = 4997988.

The previous prime is 4997981. The next prime is 4998001. The reversal of 4997989 is 9897994.

4997989 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., 4133089 + 864900 = 2033^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 4997989 - 23 = 4997981 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 46 + 93 + 93 + 76 + 95 + 85 + 97 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4997981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2498994 + 2498995.

It is an arithmetic number, because the mean of its divisors is an integer number (2498995).

Almost surely, 24997989 is an apocalyptic number.

It is an amenable number.

4997989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4997989 is an equidigital number, since it uses as much as digits as its factorization.

4997989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 55.

The square root of 4997989 is about 2235.6182590058. The cubic root of 4997989 is about 170.9746665160.

The spelling of 4997989 in words is "four million, nine hundred ninety-seven thousand, nine hundred eighty-nine".