9747778933 has 4 divisors (see below), whose sum is σ = 9749844940. Its totient is φ = 9745712928.

The previous prime is 9747778907. The next prime is 9747778967. The reversal of 9747778933 is 3398777479.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 764909649 + 8982869284 = 27657^2 + 94778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9747778933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9747778433) 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, 1025910 + ... + 1035367.

It is an arithmetic number, because the mean of its divisors is an integer number (2437461235).

Almost surely, 2^9747778933 is an apocalyptic number.

It is an amenable number.

9747778933 is a deficient number, since it is larger than the sum of its proper divisors (2066007).

9747778933 is a wasteful number, since it uses less digits than its factorization.

9747778933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066006.

The product of its digits is 56010528, while the sum is 64.

The square root of 9747778933 is about 98730.8408401346. The cubic root of 9747778933 is about 2136.1671086798.

The spelling of 9747778933 in words is "nine billion, seven hundred forty-seven million, seven hundred seventy-eight thousand, nine hundred thirty-three".