2859869 has 2 divisors, whose sum is σ = 2859870. Its totient is φ = 2859868.

The previous prime is 2859847. The next prime is 2859877. The reversal of 2859869 is 9689582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2544025 + 315844 = 1595^2 + 562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2859869 is a prime.

It is a super-2 number, since 2×2859869² = 16357701394322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2859469) 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, 1429934 + 1429935.

It is an arithmetic number, because the mean of its divisors is an integer number (1429935).

2^2859869 is an apocalyptic number.

It is an amenable number.

2859869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2859869 is an equidigital number, since it uses as much as digits as its factorization.

2859869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The square root of 2859869 is about 1691.1147211233. The cubic root of 2859869 is about 141.9434576182.

The spelling of 2859869 in words is "two million, eight hundred fifty-nine thousand, eight hundred sixty-nine".