7938385947 has 6 divisors (see below), whose sum is σ = 11466557492. Its totient is φ = 5292257292.

The previous prime is 7938385937. The next prime is 7938385957. The reversal of 7938385947 is 7495838397.

7938385947 is a `hidden beast` number, since 7 + 9 + 3 + 8 + 38 + 594 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (7938385937) and next prime (7938385957).

It is not a de Polignac number, because 7938385947 - 2¹¹ = 7938383899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7938385937) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 441021433 + ... + 441021450.

Almost surely, 2^7938385947 is an apocalyptic number.

7938385947 is a deficient number, since it is larger than the sum of its proper divisors (3528171545).

7938385947 is a wasteful number, since it uses less digits than its factorization.

7938385947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882042889 (or 882042886 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The square root of 7938385947 is about 89097.6203217572. The cubic root of 7938385947 is about 1994.8522573236.

The spelling of 7938385947 in words is "seven billion, nine hundred thirty-eight million, three hundred eighty-five thousand, nine hundred forty-seven".