78855883 has 2 divisors, whose sum is σ = 78855884. Its totient is φ = 78855882.

The previous prime is 78855863. The next prime is 78855913. The reversal of 78855883 is 38855887.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78855883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78855883.

It is not a weakly prime, because it can be changed into another prime (78855863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39427941 + 39427942.

It is an arithmetic number, because the mean of its divisors is an integer number (39427942).

Almost surely, 2^78855883 is an apocalyptic number.

78855883 is a deficient number, since it is larger than the sum of its proper divisors (1).

78855883 is an equidigital number, since it uses as much as digits as its factorization.

78855883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2150400, while the sum is 52.

The square root of 78855883 is about 8880.0835018597. The cubic root of 78855883 is about 428.8229627604.

The spelling of 78855883 in words is "seventy-eight million, eight hundred fifty-five thousand, eight hundred eighty-three".