94218857 has 2 divisors, whose sum is σ = 94218858. Its totient is φ = 94218856.

The previous prime is 94218851. The next prime is 94218863. The reversal of 94218857 is 75881249.

It is a balanced prime because it is at equal distance from previous prime (94218851) and next prime (94218863).

It can be written as a sum of positive squares in only one way, i.e., 67551961 + 26666896 = 8219^2 + 5164^2 .

It is an emirp because it is prime and its reverse (75881249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94218857 - 2¹⁴ = 94202473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (94218851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47109428 + 47109429.

It is an arithmetic number, because the mean of its divisors is an integer number (47109429).

Almost surely, 2^94218857 is an apocalyptic number.

It is an amenable number.

94218857 is a deficient number, since it is larger than the sum of its proper divisors (1).

94218857 is an equidigital number, since it uses as much as digits as its factorization.

94218857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 44.

The square root of 94218857 is about 9706.6398408512. The cubic root of 94218857 is about 455.0361956473.

The spelling of 94218857 in words is "ninety-four million, two hundred eighteen thousand, eight hundred fifty-seven".