290528729 has 2 divisors, whose sum is σ = 290528730. Its totient is φ = 290528728.

The previous prime is 290528723. The next prime is 290528737. The reversal of 290528729 is 927825092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269616400 + 20912329 = 16420^2 + 4573^2 .

It is a cyclic number.

It is not a de Polignac number, because 290528729 - 2⁴ = 290528713 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 290528729.

It is not a weakly prime, because it can be changed into another prime (290528723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145264364 + 145264365.

It is an arithmetic number, because the mean of its divisors is an integer number (145264365).

Almost surely, 2^290528729 is an apocalyptic number.

It is an amenable number.

290528729 is a deficient number, since it is larger than the sum of its proper divisors (1).

290528729 is an equidigital number, since it uses as much as digits as its factorization.

290528729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 290528729 is about 17044.9033144808. The cubic root of 290528729 is about 662.3126164721.

The spelling of 290528729 in words is "two hundred ninety million, five hundred twenty-eight thousand, seven hundred twenty-nine".