9765409949 has 4 divisors (see below), whose sum is σ = 9769121436. Its totient is φ = 9761698464.

The previous prime is 9765409937. The next prime is 9765409961. The reversal of 9765409949 is 9499045679.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9499045679 = 239 ⋅39744961.

It is an interprime number because it is at equal distance from previous prime (9765409937) and next prime (9765409961).

It can be written as a sum of positive squares in 2 ways, for example, as 5782537849 + 3982872100 = 76043^2 + 63110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9765409949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9765409891 and 9765409900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9765409649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851794 + ... + 1857059.

It is an arithmetic number, because the mean of its divisors is an integer number (2442280359).

Almost surely, 2^9765409949 is an apocalyptic number.

It is an amenable number.

9765409949 is a deficient number, since it is larger than the sum of its proper divisors (3711487).

9765409949 is a wasteful number, since it uses less digits than its factorization.

9765409949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711486.

The product of its (nonzero) digits is 22044960, while the sum is 62.

The square root of 9765409949 is about 98820.0887927146. The cubic root of 9765409949 is about 2137.4542433304.

The spelling of 9765409949 in words is "nine billion, seven hundred sixty-five million, four hundred nine thousand, nine hundred forty-nine".