2290493 has 2 divisors, whose sum is σ = 2290494. Its totient is φ = 2290492.

The previous prime is 2290471. The next prime is 2290499. The reversal of 2290493 is 3940922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2199289 + 91204 = 1483^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 2290493 - 2⁶ = 2290429 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 2²¹ + 9⁴ + 0 + 4⁵ + 9⁴ + 3¹¹ .

It is equal to p₁₆₈₈₆₀ and since 2290493 and 168860 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2290499) 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, 1145246 + 1145247.

It is an arithmetic number, because the mean of its divisors is an integer number (1145247).

2^2290493 is an apocalyptic number.

It is an amenable number.

2290493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2290493 is an equidigital number, since it uses as much as digits as its factorization.

2290493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2290493 is about 1513.4374780611. The cubic root of 2290493 is about 131.8184871250.

The spelling of 2290493 in words is "two million, two hundred ninety thousand, four hundred ninety-three".