9909674777 has 2 divisors, whose sum is σ = 9909674778. Its totient is φ = 9909674776.

The previous prime is 9909674773. The next prime is 9909674783. The reversal of 9909674777 is 7774769099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6708265216 + 3201409561 = 81904^2 + 56581^2 .

It is an emirp because it is prime and its reverse (7774769099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9909674777 - 2² = 9909674773 is a prime.

It is not a weakly prime, because it can be changed into another prime (9909674771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954837388 + 4954837389.

It is an arithmetic number, because the mean of its divisors is an integer number (4954837389).

Almost surely, 2^9909674777 is an apocalyptic number.

It is an amenable number.

9909674777 is a deficient number, since it is larger than the sum of its proper divisors (1).

9909674777 is an equidigital number, since it uses as much as digits as its factorization.

9909674777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42007896, while the sum is 65.

The square root of 9909674777 is about 99547.3494222724. The cubic root of 9909674777 is about 2147.9284013398.

The spelling of 9909674777 in words is "nine billion, nine hundred nine million, six hundred seventy-four thousand, seven hundred seventy-seven".