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290393 is a prime number
BaseRepresentation
bin1000110111001011001
3112202100022
41012321121
533243033
610120225
72316425
oct1067131
9482308
10290393
111891a4
12120075
13a223c
1477b85
155b098
hex46e59

290393 has 2 divisors, whose sum is σ = 290394. Its totient is φ = 290392.

The previous prime is 290383. The next prime is 290399. The reversal of 290393 is 393092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267289 + 23104 = 517^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 290393 - 28 = 290137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (290399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145196 + 145197.

It is an arithmetic number, because the mean of its divisors is an integer number (145197).

2290393 is an apocalyptic number.

It is an amenable number.

290393 is a deficient number, since it is larger than the sum of its proper divisors (1).

290393 is an equidigital number, since it uses as much as digits as its factorization.

290393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 290393 is about 538.8812485140. The cubic root of 290393 is about 66.2209460831.

The spelling of 290393 in words is "two hundred ninety thousand, three hundred ninety-three".