94776821 has 2 divisors, whose sum is σ = 94776822. Its totient is φ = 94776820.

The previous prime is 94776791. The next prime is 94776823. The reversal of 94776821 is 12867749.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69122596 + 25654225 = 8314^2 + 5065^2 .

It is a cyclic number.

It is not a de Polignac number, because 94776821 - 2¹⁰ = 94775797 is a prime.

Together with 94776823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94776823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47388410 + 47388411.

It is an arithmetic number, because the mean of its divisors is an integer number (47388411).

Almost surely, 2^94776821 is an apocalyptic number.

It is an amenable number.

94776821 is a deficient number, since it is larger than the sum of its proper divisors (1).

94776821 is an equidigital number, since it uses as much as digits as its factorization.

94776821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 94776821 is about 9735.3387717121. The cubic root of 94776821 is about 455.9326696654.

The spelling of 94776821 in words is "ninety-four million, seven hundred seventy-six thousand, eight hundred twenty-one".