7139871408 has 20 divisors (see below), whose sum is σ = 18444667928. Its totient is φ = 2379957120.

The previous prime is 7139871397. The next prime is 7139871413. The reversal of 7139871408 is 8041789317.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 148747321 = 7139871408 / (7 + 1 + 3 + 9 + 8 + 7 + 1 + 4 + 0 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74373613 + ... + 74373708.

Almost surely, 2^7139871408 is an apocalyptic number.

It is an amenable number.

7139871408 is an abundant number, since it is smaller than the sum of its proper divisors (11304796520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7139871408 is a wasteful number, since it uses less digits than its factorization.

7139871408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148747332 (or 148747326 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 7139871408 is about 84497.7597809551. The cubic root of 7139871408 is about 1925.5884102625.

The spelling of 7139871408 in words is "seven billion, one hundred thirty-nine million, eight hundred seventy-one thousand, four hundred eight".