290993 has 2 divisors, whose sum is σ = 290994. Its totient is φ = 290992.

The previous prime is 290987. The next prime is 290999. The reversal of 290993 is 399092.

It is a balanced prime because it is at equal distance from previous prime (290987) and next prime (290999).

It can be written as a sum of positive squares in only one way, i.e., 237169 + 53824 = 487^2 + 232^2 .

It is a cyclic number.

It is not a de Polignac number, because 290993 - 2⁸ = 290737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (290999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145496 + 145497.

It is an arithmetic number, because the mean of its divisors is an integer number (145497).

2²⁹⁰⁹⁹³ is an apocalyptic number.

It is an amenable number.

290993 is a deficient number, since it is larger than the sum of its proper divisors (1).

290993 is an equidigital number, since it uses as much as digits as its factorization.

290993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 290993 is about 539.4376701714. The cubic root of 290993 is about 66.2665225196.

The spelling of 290993 in words is "two hundred ninety thousand, nine hundred ninety-three".