78346883 has 2 divisors, whose sum is σ = 78346884. Its totient is φ = 78346882.

The previous prime is 78346843. The next prime is 78346909. The reversal of 78346883 is 38864387.

It is a strong prime.

It is an emirp because it is prime and its reverse (38864387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78346883 - 2⁶ = 78346819 is a prime.

It is a super-2 number, since 2×78346883² = 12276468151631378, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (78346843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39173441 + 39173442.

It is an arithmetic number, because the mean of its divisors is an integer number (39173442).

Almost surely, 2^78346883 is an apocalyptic number.

78346883 is a deficient number, since it is larger than the sum of its proper divisors (1).

78346883 is an equidigital number, since it uses as much as digits as its factorization.

78346883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 47.

The square root of 78346883 is about 8851.3774634234. The cubic root of 78346883 is about 427.8983130335.

The spelling of 78346883 in words is "seventy-eight million, three hundred forty-six thousand, eight hundred eighty-three".