2790289 has 2 divisors, whose sum is σ = 2790290. Its totient is φ = 2790288.

The previous prime is 2790259. The next prime is 2790299. The reversal of 2790289 is 9820972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1868689 + 921600 = 1367^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 2790289 - 2⁵ = 2790257 is a prime.

It is a d-powerful number, because it can be written as 2¹⁶ + 7⁷ + 9⁵ + 0 + 2²⁰ + 8⁶ + 9⁶ .

It is not a weakly prime, because it can be changed into another prime (2790209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395144 + 1395145.

It is an arithmetic number, because the mean of its divisors is an integer number (1395145).

2^2790289 is an apocalyptic number.

It is an amenable number.

2790289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2790289 is an equidigital number, since it uses as much as digits as its factorization.

2790289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2790289 is about 1670.4158164960. The cubic root of 2790289 is about 140.7828422888.

The spelling of 2790289 in words is "two million, seven hundred ninety thousand, two hundred eighty-nine".