9979471 has 2 divisors, whose sum is σ = 9979472. Its totient is φ = 9979470.

The previous prime is 9979469. The next prime is 9979511. The reversal of 9979471 is 1749799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9979471 - 2¹ = 9979469 is a prime.

It is a super-3 number, since 3×9979471³ (a number of 22 digits) contains 333 as substring.

Together with 9979469, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9979271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989735 + 4989736.

It is an arithmetic number, because the mean of its divisors is an integer number (4989736).

Almost surely, 2^9979471 is an apocalyptic number.

9979471 is a deficient number, since it is larger than the sum of its proper divisors (1).

9979471 is an equidigital number, since it uses as much as digits as its factorization.

9979471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 46.

The square root of 9979471 is about 3159.0300726647. The cubic root of 9979471 is about 215.2959400372.

The spelling of 9979471 in words is "nine million, nine hundred seventy-nine thousand, four hundred seventy-one".