9401947 has 2 divisors, whose sum is σ = 9401948. Its totient is φ = 9401946.

The previous prime is 9401921. The next prime is 9401957. The reversal of 9401947 is 7491049.

It is a strong prime.

It is an emirp because it is prime and its reverse (7491049) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9401947 is a prime.

It is not a weakly prime, because it can be changed into another prime (9401957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4700973 + 4700974.

It is an arithmetic number, because the mean of its divisors is an integer number (4700974).

Almost surely, 2^9401947 is an apocalyptic number.

9401947 is a deficient number, since it is larger than the sum of its proper divisors (1).

9401947 is an equidigital number, since it uses as much as digits as its factorization.

9401947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 9401947 is about 3066.2594476006. The cubic root of 9401947 is about 211.0599995584.

It can be divided in two parts, 9 and 401947, that added together give a square (401956 = 634²).

The spelling of 9401947 in words is "nine million, four hundred one thousand, nine hundred forty-seven".