78983867 has 2 divisors, whose sum is σ = 78983868. Its totient is φ = 78983866.

The previous prime is 78983813. The next prime is 78983873. The reversal of 78983867 is 76838987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78983867 - 2⁶ = 78983803 is a prime.

It is not a weakly prime, because it can be changed into another prime (78988867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39491933 + 39491934.

It is an arithmetic number, because the mean of its divisors is an integer number (39491934).

Almost surely, 2^78983867 is an apocalyptic number.

78983867 is a deficient number, since it is larger than the sum of its proper divisors (1).

78983867 is an equidigital number, since it uses as much as digits as its factorization.

78983867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 56.

The square root of 78983867 is about 8887.2868188216. The cubic root of 78983867 is about 429.0548322210.

The spelling of 78983867 in words is "seventy-eight million, nine hundred eighty-three thousand, eight hundred sixty-seven".