9747277745 has 4 divisors (see below), whose sum is σ = 11696733300. Its totient is φ = 7797822192.

The previous prime is 9747277741. The next prime is 9747277747. The reversal of 9747277745 is 5477727479.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5477727479 = 7 ⋅782532497.

It can be written as a sum of positive squares in 2 ways, for example, as 3944342416 + 5802935329 = 62804^2 + 76177^2 .

It is a cyclic number.

It is not a de Polignac number, because 9747277745 - 2² = 9747277741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9747277741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974727770 + ... + 974727779.

It is an arithmetic number, because the mean of its divisors is an integer number (2924183325).

Almost surely, 2^9747277745 is an apocalyptic number.

It is an amenable number.

9747277745 is a deficient number, since it is larger than the sum of its proper divisors (1949455555).

9747277745 is a wasteful number, since it uses less digits than its factorization.

9747277745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949455554.

The product of its digits is 24202080, while the sum is 59.

The square root of 9747277745 is about 98728.3026543048. The cubic root of 9747277745 is about 2136.1304972740.

The spelling of 9747277745 in words is "nine billion, seven hundred forty-seven million, two hundred seventy-seven thousand, seven hundred forty-five".