7928798434 has 4 divisors (see below), whose sum is σ = 11893197654. Its totient is φ = 3964399216.

The previous prime is 7928798411. The next prime is 7928798461. The reversal of 7928798434 is 4348978297.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7699185025 + 229613409 = 87745^2 + 15153^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1982199607 + ... + 1982199610.

Almost surely, 2^7928798434 is an apocalyptic number.

7928798434 is a deficient number, since it is larger than the sum of its proper divisors (3964399220).

7928798434 is a wasteful number, since it uses less digits than its factorization.

7928798434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964399219.

The product of its digits is 24385536, while the sum is 61.

The square root of 7928798434 is about 89043.8006488941. The cubic root of 7928798434 is about 1994.0488456113.

The spelling of 7928798434 in words is "seven billion, nine hundred twenty-eight million, seven hundred ninety-eight thousand, four hundred thirty-four".