290746889 has 2 divisors, whose sum is σ = 290746890. Its totient is φ = 290746888.

The previous prime is 290746877. The next prime is 290746901. The reversal of 290746889 is 988647092.

It is a balanced prime because it is at equal distance from previous prime (290746877) and next prime (290746901).

It can be written as a sum of positive squares in only one way, i.e., 228463225 + 62283664 = 15115^2 + 7892^2 .

It is a cyclic number.

It is not a de Polignac number, because 290746889 - 2²⁸ = 22311433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 290746889.

It is a weakly prime.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145373444 + 145373445.

It is an arithmetic number, because the mean of its divisors is an integer number (145373445).

Almost surely, 2^290746889 is an apocalyptic number.

It is an amenable number.

290746889 is a deficient number, since it is larger than the sum of its proper divisors (1).

290746889 is an equidigital number, since it uses as much as digits as its factorization.

290746889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 290746889 is about 17051.3016805169. The cubic root of 290746889 is about 662.4783533452.

The spelling of 290746889 in words is "two hundred ninety million, seven hundred forty-six thousand, eight hundred eighty-nine".