9999755 has 8 divisors (see below), whose sum is σ = 12116832.
Its totient is φ = 7921728.
The previous prime is 9999749. The next prime is 9999761. The reversal of 9999755 is 5579999.
It is an interprime number because it is at equal distance from previous prime (9999749) and next prime (9999761).
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 9999755 - 24 = 9999739 is a prime.
It is a Duffinian number.
It is a nialpdrome in base 10.
It is a junction number, because it is equal to n+sod(n) for n = 9999697 and 9999706.
It is an unprimeable number.
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, 9194 + ... + 10223.
It is an arithmetic number, because the mean of its divisors is an integer number (1514604).
Almost surely, 29999755 is an apocalyptic number.
9999755 is a deficient number, since it is larger than the sum of its proper divisors (2117077).
9999755 is a wasteful number, since it uses less digits than its factorization.
9999755 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 19525.
The product of its digits is 1148175, while the sum is 53.
The square root of 9999755 is about 3162.2389220298.
The cubic root of 9999755 is about 215.4417095338.
The spelling of 9999755 in words is "nine million, nine hundred ninety-nine thousand, seven hundred fifty-five".