9999769 has 8 divisors (see below), whose sum is σ = 10869320. Its totient is φ = 9144576.

The previous prime is 9999761. The next prime is 9999823. The reversal of 9999769 is 9679999.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3948169 + 6051600 = 1987^2 + 2460^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9999769 - 2³ = 9999761 is a prime.

It is a super-2 number, since 2×9999769² = 199990760106722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999761) 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 in 7 ways as a sum of consecutive naturals, for example, 2112 + ... + 4945.

It is an arithmetic number, because the mean of its divisors is an integer number (1358665).

Almost surely, 2^9999769 is an apocalyptic number.

It is an amenable number.

9999769 is a deficient number, since it is larger than the sum of its proper divisors (869551).

9999769 is a wasteful number, since it uses less digits than its factorization.

9999769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7179.

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

The square root of 9999769 is about 3162.2411356505. The cubic root of 9999769 is about 215.4418100757.

The spelling of 9999769 in words is "nine million, nine hundred ninety-nine thousand, seven hundred sixty-nine".