94778939 has 2 divisors, whose sum is σ = 94778940. Its totient is φ = 94778938.

The previous prime is 94778903. The next prime is 94778947. The reversal of 94778939 is 93987749.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94778939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (94768939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47389469 + 47389470.

It is an arithmetic number, because the mean of its divisors is an integer number (47389470).

Almost surely, 2^94778939 is an apocalyptic number.

94778939 is a deficient number, since it is larger than the sum of its proper divisors (1).

94778939 is an equidigital number, since it uses as much as digits as its factorization.

94778939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The square root of 94778939 is about 9735.4475500616. The cubic root of 94778939 is about 455.9360659185.

The spelling of 94778939 in words is "ninety-four million, seven hundred seventy-eight thousand, nine hundred thirty-nine".