2778299 has 2 divisors, whose sum is σ = 2778300. Its totient is φ = 2778298.

The previous prime is 2778277. The next prime is 2778323. The reversal of 2778299 is 9928772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2778299 - 2¹² = 2774203 is a prime.

It is not a weakly prime, because it can be changed into another prime (2778799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389149 + 1389150.

It is an arithmetic number, because the mean of its divisors is an integer number (1389150).

2^2778299 is an apocalyptic number.

2778299 is a deficient number, since it is larger than the sum of its proper divisors (1).

2778299 is an equidigital number, since it uses as much as digits as its factorization.

2778299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 44.

The square root of 2778299 is about 1666.8230259989. The cubic root of 2778299 is about 140.5809026507.

The spelling of 2778299 in words is "two million, seven hundred seventy-eight thousand, two hundred ninety-nine".