8471939157 has 24 divisors (see below), whose sum is σ = 13810062240. Its totient is φ = 4957454880.

The previous prime is 8471939143. The next prime is 8471939227. The reversal of 8471939157 is 7519391748.

It is a happy number.

It is not a de Polignac number, because 8471939157 - 2⁶ = 8471939093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8471939057) 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 23 ways as a sum of consecutive naturals, for example, 1472563 + ... + 1478304.

It is an arithmetic number, because the mean of its divisors is an integer number (575419260).

Almost surely, 2^8471939157 is an apocalyptic number.

8471939157 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

8471939157 is a deficient number, since it is larger than the sum of its proper divisors (5338123083).

8471939157 is a wasteful number, since it uses less digits than its factorization.

8471939157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950913 (or 2950910 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 54.

The square root of 8471939157 is about 92043.1374791190. The cubic root of 8471939157 is about 2038.5792970074.

The spelling of 8471939157 in words is "eight billion, four hundred seventy-one million, nine hundred thirty-nine thousand, one hundred fifty-seven".