7809955969 has 24 divisors (see below), whose sum is σ = 8471068992. Its totient is φ = 7185134880.

The previous prime is 7809955943. The next prime is 7809955973. The reversal of 7809955969 is 9695599087.

It is not a de Polignac number, because 7809955969 - 2⁷ = 7809955841 is a prime.

It is a super-2 number, since 2×7809955969² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7809955469) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 2847939 + ... + 2850679.

It is an arithmetic number, because the mean of its divisors is an integer number (352961208).

Almost surely, 2^7809955969 is an apocalyptic number.

It is an amenable number.

7809955969 is a deficient number, since it is larger than the sum of its proper divisors (661113023).

7809955969 is a wasteful number, since it uses less digits than its factorization.

7809955969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917 (or 2874 counting only the distinct ones).

The product of its (nonzero) digits is 55112400, while the sum is 67.

The square root of 7809955969 is about 88373.9552639803. The cubic root of 7809955969 is about 1984.0359103782.

The spelling of 7809955969 in words is "seven billion, eight hundred nine million, nine hundred fifty-five thousand, nine hundred sixty-nine".