9894977 has 2 divisors, whose sum is σ = 9894978. Its totient is φ = 9894976.

The previous prime is 9894971. The next prime is 9894979. The reversal of 9894977 is 7794989.

9894977 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9480241 + 414736 = 3079^2 + 644^2 .

It is a cyclic number.

It is not a de Polignac number, because 9894977 - 2⁸ = 9894721 is a prime.

Together with 9894979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9894971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4947488 + 4947489.

It is an arithmetic number, because the mean of its divisors is an integer number (4947489).

Almost surely, 2^9894977 is an apocalyptic number.

It is an amenable number.

9894977 is a deficient number, since it is larger than the sum of its proper divisors (1).

9894977 is an equidigital number, since it uses as much as digits as its factorization.

9894977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 53.

The square root of 9894977 is about 3145.6282361398. The cubic root of 9894977 is about 214.6865958355.

The spelling of 9894977 in words is "nine million, eight hundred ninety-four thousand, nine hundred seventy-seven".