8609777444 has 6 divisors (see below), whose sum is σ = 15067110534. Its totient is φ = 4304888720.

The previous prime is 8609777431. The next prime is 8609777471. The reversal of 8609777444 is 4447779068.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5347996900 + 3261780544 = 73130^2 + 57112^2 .

It is a super-2 number, since 2×8609777444² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8609777444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076222177 + ... + 1076222184.

It is an arithmetic number, because the mean of its divisors is an integer number (2511185089).

Almost surely, 2^8609777444 is an apocalyptic number.

It is an amenable number.

8609777444 is a deficient number, since it is larger than the sum of its proper divisors (6457333090).

8609777444 is a wasteful number, since it uses less digits than its factorization.

8609777444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152444365 (or 2152444363 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 56.

The square root of 8609777444 is about 92788.8864250455. The cubic root of 8609777444 is about 2049.5757554772.

The spelling of 8609777444 in words is "eight billion, six hundred nine million, seven hundred seventy-seven thousand, four hundred forty-four".