9997759 has 8 divisors (see below), whose sum is σ = 10160640. Its totient is φ = 9836376.

The previous prime is 9997753. The next prime is 9997777. The reversal of 9997759 is 9577999.

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 9997759 - 2¹⁷ = 9866687 is a prime.

It is an Ulam number.

It is a Duffinian number.

9997759 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23652 + ... + 24070.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 2^9997759 is an apocalyptic number.

9997759 is a deficient number, since it is larger than the sum of its proper divisors (162881).

9997759 is a wasteful number, since it uses less digits than its factorization.

9997759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749.

The product of its digits is 1607445, while the sum is 55.

The square root of 9997759 is about 3161.9233071028. The cubic root of 9997759 is about 215.4273741737.

The spelling of 9997759 in words is "nine million, nine hundred ninety-seven thousand, seven hundred fifty-nine".