9799969 has 2 divisors, whose sum is σ = 9799970. Its totient is φ = 9799968.

The previous prime is 9799967. The next prime is 9799987. The reversal of 9799969 is 9699979.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9529569 + 270400 = 3087^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 9799969 - 2¹ = 9799967 is a prime.

It is a super-2 number, since 2×9799969² = 192078784801922, which contains 22 as substring.

Together with 9799967, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (9799967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4899984 + 4899985.

It is an arithmetic number, because the mean of its divisors is an integer number (4899985).

Almost surely, 2^9799969 is an apocalyptic number.

It is an amenable number.

9799969 is a deficient number, since it is larger than the sum of its proper divisors (1).

9799969 is an equidigital number, since it uses as much as digits as its factorization.

9799969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2480058, while the sum is 58.

The square root of 9799969 is about 3130.4902172024. The cubic root of 9799969 is about 213.9972704692.

The spelling of 9799969 in words is "nine million, seven hundred ninety-nine thousand, nine hundred sixty-nine".