2861959 has 4 divisors (see below), whose sum is σ = 2986416. Its totient is φ = 2737504.

The previous prime is 2861941. The next prime is 2861977. The reversal of 2861959 is 9591682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9591682 = 2 ⋅4795841.

It is an interprime number because it is at equal distance from previous prime (2861941) and next prime (2861977).

It is a cyclic number.

It is not a de Polignac number, because 2861959 - 2⁵ = 2861927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861909) 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 in 3 ways as a sum of consecutive naturals, for example, 62194 + ... + 62239.

It is an arithmetic number, because the mean of its divisors is an integer number (746604).

2^2861959 is an apocalyptic number.

2861959 is a deficient number, since it is larger than the sum of its proper divisors (124457).

2861959 is a wasteful number, since it uses less digits than its factorization.

2861959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124456.

The product of its digits is 38880, while the sum is 40.

The square root of 2861959 is about 1691.7325438733. The cubic root of 2861959 is about 141.9780267528.

The spelling of 2861959 in words is "two million, eight hundred sixty-one thousand, nine hundred fifty-nine".