9746561009 has 4 divisors (see below), whose sum is σ = 9751772160. Its totient is φ = 9741349860.

The previous prime is 9746560973. The next prime is 9746561017. The reversal of 9746561009 is 9001656479.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9001656479 = 61 ⋅147568139.

It is a cyclic number.

It is not a de Polignac number, because 9746561009 - 2¹² = 9746556913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9746561609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2602769 + ... + 2606510.

It is an arithmetic number, because the mean of its divisors is an integer number (2437943040).

Almost surely, 2^9746561009 is an apocalyptic number.

It is an amenable number.

9746561009 is a deficient number, since it is larger than the sum of its proper divisors (5211151).

9746561009 is a wasteful number, since it uses less digits than its factorization.

9746561009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211150.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 9746561009 is about 98724.6727469886. The cubic root of 9746561009 is about 2136.0781380685.

The spelling of 9746561009 in words is "nine billion, seven hundred forty-six million, five hundred sixty-one thousand, nine".