290212093 has 2 divisors, whose sum is σ = 290212094. Its totient is φ = 290212092.

The previous prime is 290212067. The next prime is 290212129. The reversal of 290212093 is 390212092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228070404 + 62141689 = 15102^2 + 7883^2 .

It is a cyclic number.

It is not a de Polignac number, because 290212093 - 2¹⁷ = 290081021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290212393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145106046 + 145106047.

It is an arithmetic number, because the mean of its divisors is an integer number (145106047).

Almost surely, 2^290212093 is an apocalyptic number.

It is an amenable number.

290212093 is a deficient number, since it is larger than the sum of its proper divisors (1).

290212093 is an equidigital number, since it uses as much as digits as its factorization.

290212093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 290212093 is about 17035.6124926578. The cubic root of 290212093 is about 662.0719193929.

Subtracting 290212093 from its reverse (390212092), we obtain a palindrome (99999999).

The spelling of 290212093 in words is "two hundred ninety million, two hundred twelve thousand, ninety-three".