9669140749 has 2 divisors, whose sum is σ = 9669140750. Its totient is φ = 9669140748.

The previous prime is 9669140743. The next prime is 9669140797. The reversal of 9669140749 is 9470419669.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6286904100 + 3382236649 = 79290^2 + 58157^2 .

It is a cyclic number.

It is not a de Polignac number, because 9669140749 - 2¹⁷ = 9669009677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9669140749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9669140743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4834570374 + 4834570375.

It is an arithmetic number, because the mean of its divisors is an integer number (4834570375).

Almost surely, 2^9669140749 is an apocalyptic number.

It is an amenable number.

9669140749 is a deficient number, since it is larger than the sum of its proper divisors (1).

9669140749 is an equidigital number, since it uses as much as digits as its factorization.

9669140749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 9669140749 is about 98331.7891070838. The cubic root of 9669140749 is about 2130.4072302848.

The spelling of 9669140749 in words is "nine billion, six hundred sixty-nine million, one hundred forty thousand, seven hundred forty-nine".