7945009772 has 24 divisors (see below), whose sum is σ = 16824727584. Its totient is φ = 3204709632.

The previous prime is 7945009759. The next prime is 7945009777. The reversal of 7945009772 is 2779005497.

It is a self number, because there is not a number n which added to its sum of digits gives 7945009772.

It is not an unprimeable number, because it can be changed into a prime (7945009777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8345123 + ... + 8346074.

It is an arithmetic number, because the mean of its divisors is an integer number (701030316).

Almost surely, 2^7945009772 is an apocalyptic number.

It is an amenable number.

7945009772 is an abundant number, since it is smaller than the sum of its proper divisors (8879717812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7945009772 is a wasteful number, since it uses less digits than its factorization.

7945009772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16691225 (or 16691223 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 50.

The square root of 7945009772 is about 89134.7842988359. The cubic root of 7945009772 is about 1995.4069409791.

The spelling of 7945009772 in words is "seven billion, nine hundred forty-five million, nine thousand, seven hundred seventy-two".