7938655471 has 4 divisors (see below), whose sum is σ = 7938843232. Its totient is φ = 7938467712.

The previous prime is 7938655451. The next prime is 7938655481. The reversal of 7938655471 is 1745568397.

7938655471 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 7938655471 - 2¹¹ = 7938653423 is a prime.

It is a super-3 number, since 3×7938655471³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7938655421) 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 3 ways as a sum of consecutive naturals, for example, 2575 + ... + 126031.

It is an arithmetic number, because the mean of its divisors is an integer number (1984710808).

Almost surely, 2^7938655471 is an apocalyptic number.

7938655471 is a deficient number, since it is larger than the sum of its proper divisors (187761).

7938655471 is a wasteful number, since it uses less digits than its factorization.

7938655471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187760.

The product of its digits is 6350400, while the sum is 55.

The square root of 7938655471 is about 89099.1328296746. The cubic root of 7938655471 is about 1994.8748334694.

The spelling of 7938655471 in words is "seven billion, nine hundred thirty-eight million, six hundred fifty-five thousand, four hundred seventy-one".