9979469 has 2 divisors, whose sum is σ = 9979470. Its totient is φ = 9979468.

The previous prime is 9979433. The next prime is 9979471. The reversal of 9979469 is 9649799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6604900 + 3374569 = 2570^2 + 1837^2 .

It is an emirp because it is prime and its reverse (9649799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9979469 - 2⁸ = 9979213 is a prime.

It is a super-2 number, since 2×9979469² = 199179603043922, which contains 22 as substring.

Together with 9979471, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9979469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9979169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989734 + 4989735.

It is an arithmetic number, because the mean of its divisors is an integer number (4989735).

Almost surely, 2^9979469 is an apocalyptic number.

It is an amenable number.

9979469 is a deficient number, since it is larger than the sum of its proper divisors (1).

9979469 is an equidigital number, since it uses as much as digits as its factorization.

9979469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 53.

The square root of 9979469 is about 3159.0297561118. The cubic root of 9979469 is about 215.2959256546.

The spelling of 9979469 in words is "nine million, nine hundred seventy-nine thousand, four hundred sixty-nine".