2861399 has 2 divisors, whose sum is σ = 2861400. Its totient is φ = 2861398.

The previous prime is 2861387. The next prime is 2861447. The reversal of 2861399 is 9931682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2861399 - 2¹² = 2857303 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2861699) 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, 1430699 + 1430700.

It is an arithmetic number, because the mean of its divisors is an integer number (1430700).

2^2861399 is an apocalyptic number.

2861399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2861399 is an equidigital number, since it uses as much as digits as its factorization.

2861399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 2861399 is about 1691.5670249801. The cubic root of 2861399 is about 141.9687658606.

The spelling of 2861399 in words is "two million, eight hundred sixty-one thousand, three hundred ninety-nine".