9920347 has 2 divisors, whose sum is σ = 9920348. Its totient is φ = 9920346.

The previous prime is 9920311. The next prime is 9920353. The reversal of 9920347 is 7430299.

It is a strong prime.

It is an emirp because it is prime and its reverse (7430299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9920347 - 2⁷ = 9920219 is a prime.

9920347 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9920357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4960173 + 4960174.

It is an arithmetic number, because the mean of its divisors is an integer number (4960174).

Almost surely, 2^9920347 is an apocalyptic number.

9920347 is a deficient number, since it is larger than the sum of its proper divisors (1).

9920347 is an equidigital number, since it uses as much as digits as its factorization.

9920347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 9920347 is about 3149.6582354281. The cubic root of 9920347 is about 214.8699195111.

The spelling of 9920347 in words is "nine million, nine hundred twenty thousand, three hundred forty-seven".