7949785828 has 24 divisors (see below), whose sum is σ = 14068121760. Its totient is φ = 3930538560.

The previous prime is 7949785819. The next prime is 7949785829. The reversal of 7949785828 is 8285879497.

It is a super-2 number, since 2×7949785828² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7949785829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121488 + ... + 175096.

It is an arithmetic number, because the mean of its divisors is an integer number (586171740).

Almost surely, 2^7949785828 is an apocalyptic number.

It is an amenable number.

7949785828 is a deficient number, since it is larger than the sum of its proper divisors (6118335932).

7949785828 is a wasteful number, since it uses less digits than its factorization.

7949785828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54027 (or 54025 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 67.

The square root of 7949785828 is about 89161.5714756083. The cubic root of 7949785828 is about 1995.8066999284.

The spelling of 7949785828 in words is "seven billion, nine hundred forty-nine million, seven hundred eighty-five thousand, eight hundred twenty-eight".