7939193956 has 6 divisors (see below), whose sum is σ = 13893589430. Its totient is φ = 3969596976.

The previous prime is 7939193929. The next prime is 7939193963. The reversal of 7939193956 is 6593919397.

It can be written as a sum of positive squares in only one way, i.e., 7843936356 + 95257600 = 88566^2 + 9760^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7939193894 and 7939193903.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992399241 + ... + 992399248.

Almost surely, 2^7939193956 is an apocalyptic number.

It is an amenable number.

7939193956 is a deficient number, since it is larger than the sum of its proper divisors (5954395474).

7939193956 is a wasteful number, since it uses less digits than its factorization.

7939193956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984798493 (or 1984798491 counting only the distinct ones).

The product of its digits is 12400290, while the sum is 61.

The square root of 7939193956 is about 89102.1546091900. The cubic root of 7939193956 is about 1994.9199370721.

The spelling of 7939193956 in words is "seven billion, nine hundred thirty-nine million, one hundred ninety-three thousand, nine hundred fifty-six".