9749877789 has 8 divisors (see below), whose sum is σ = 13072462560. Its totient is φ = 6463605776.

The previous prime is 9749877779. The next prime is 9749877793. The reversal of 9749877789 is 9877789479.

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 9749877789 - 2⁴ = 9749877773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9749877789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9749877769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9077562 + ... + 9078635.

It is an arithmetic number, because the mean of its divisors is an integer number (1634057820).

Almost surely, 2^9749877789 is an apocalyptic number.

It is an amenable number.

9749877789 is a deficient number, since it is larger than the sum of its proper divisors (3322584771).

9749877789 is a wasteful number, since it uses less digits than its factorization.

9749877789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18156379.

The product of its digits is 448084224, while the sum is 75.

The square root of 9749877789 is about 98741.4694492643. The cubic root of 9749877789 is about 2136.3204148990.

The spelling of 9749877789 in words is "nine billion, seven hundred forty-nine million, eight hundred seventy-seven thousand, seven hundred eighty-nine".