290023 has 2 divisors, whose sum is σ = 290024. Its totient is φ = 290022.

The previous prime is 290021. The next prime is 290027. The reversal of 290023 is 320092.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 290023 - 2¹ = 290021 is a prime.

It is a super-2 number, since 2×290023² = 168226681058, which contains 22 as substring.

Together with 290021, it forms a pair of twin primes.

It is an Ulam number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 289979 and 290006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290021) by changing a digit.

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, 145011 + 145012.

It is an arithmetic number, because the mean of its divisors is an integer number (145012).

2²⁹⁰⁰²³ is an apocalyptic number.

290023 is a deficient number, since it is larger than the sum of its proper divisors (1).

290023 is an equidigital number, since it uses as much as digits as its factorization.

290023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 290023 is about 538.5378352539. The cubic root of 290023 is about 66.1928093126.

The spelling of 290023 in words is "two hundred ninety thousand, twenty-three".