78954287 has 2 divisors, whose sum is σ = 78954288. Its totient is φ = 78954286.

The previous prime is 78954247. The next prime is 78954299. The reversal of 78954287 is 78245987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78954287 - 2⁶ = 78954223 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78954247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39477143 + 39477144.

It is an arithmetic number, because the mean of its divisors is an integer number (39477144).

Almost surely, 2^78954287 is an apocalyptic number.

78954287 is a deficient number, since it is larger than the sum of its proper divisors (1).

78954287 is an equidigital number, since it uses as much as digits as its factorization.

78954287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 50.

The square root of 78954287 is about 8885.6224880421. The cubic root of 78954287 is about 429.0012642073.

The spelling of 78954287 in words is "seventy-eight million, nine hundred fifty-four thousand, two hundred eighty-seven".