290666093 has 4 divisors (see below), whose sum is σ = 290728320. Its totient is φ = 290603868.

The previous prime is 290666087. The next prime is 290666143. The reversal of 290666093 is 390666092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 290666093 - 2¹⁰ = 290665069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 290666093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290666063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23483 + ... + 33656.

It is an arithmetic number, because the mean of its divisors is an integer number (72682080).

Almost surely, 2^290666093 is an apocalyptic number.

It is an amenable number.

290666093 is a deficient number, since it is larger than the sum of its proper divisors (62227).

290666093 is an equidigital number, since it uses as much as digits as its factorization.

290666093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62226.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 290666093 is about 17048.9323126113. The cubic root of 290666093 is about 662.4169820265.

Subtracting 290666093 from its reverse (390666092), we obtain a palindrome (99999999).

The spelling of 290666093 in words is "two hundred ninety million, six hundred sixty-six thousand, ninety-three".