290268493 has 2 divisors, whose sum is σ = 290268494. Its totient is φ = 290268492.

The previous prime is 290268467. The next prime is 290268497. The reversal of 290268493 is 394862092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233386729 + 56881764 = 15277^2 + 7542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-290268493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290268497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145134246 + 145134247.

It is an arithmetic number, because the mean of its divisors is an integer number (145134247).

Almost surely, 2^290268493 is an apocalyptic number.

It is an amenable number.

290268493 is a deficient number, since it is larger than the sum of its proper divisors (1).

290268493 is an equidigital number, since it uses as much as digits as its factorization.

290268493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 290268493 is about 17037.2677680431. The cubic root of 290268493 is about 662.1148057720.

The spelling of 290268493 in words is "two hundred ninety million, two hundred sixty-eight thousand, four hundred ninety-three".