2861405879 has 2 divisors, whose sum is σ = 2861405880. Its totient is φ = 2861405878.

The previous prime is 2861405863. The next prime is 2861405887. The reversal of 2861405879 is 9785041682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2861405879 - 2⁴ = 2861405863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2861405819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1430702939 + 1430702940.

It is an arithmetic number, because the mean of its divisors is an integer number (1430702940).

Almost surely, 2^2861405879 is an apocalyptic number.

2861405879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2861405879 is an equidigital number, since it uses as much as digits as its factorization.

2861405879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 2861405879 is about 53492.1104369607. The cubic root of 2861405879 is about 1419.6887962803.

The spelling of 2861405879 in words is "two billion, eight hundred sixty-one million, four hundred five thousand, eight hundred seventy-nine".