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290000497 is a prime number
BaseRepresentation
bin10001010010010…
…000111001110001
3202012200112220011
4101102100321301
51043220003442
644435414521
710120651333
oct2122207161
9665615804
10290000497
11139774736
1281154441
1348109537
142a72d453
151a6d6117
hex11490e71

290000497 has 2 divisors, whose sum is σ = 290000498. Its totient is φ = 290000496.

The previous prime is 290000479. The next prime is 290000507. The reversal of 290000497 is 794000092.

Together with previous prime (290000479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204604416 + 85396081 = 14304^2 + 9241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-290000497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (290000407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145000248 + 145000249.

It is an arithmetic number, because the mean of its divisors is an integer number (145000249).

Almost surely, 2290000497 is an apocalyptic number.

It is an amenable number.

290000497 is a deficient number, since it is larger than the sum of its proper divisors (1).

290000497 is an equidigital number, since it uses as much as digits as its factorization.

290000497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 290000497 is about 17029.4009583426. The cubic root of 290000497 is about 661.9109729283.

The spelling of 290000497 in words is "two hundred ninety million, four hundred ninety-seven", and thus it is an aban number.