4139687481 has 8 divisors (see below), whose sum is σ = 5532044640. Its totient is φ = 2753560992.

The previous prime is 4139687473. The next prime is 4139687521. The reversal of 4139687481 is 1847869314.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4139687481 - 2³ = 4139687473 is a prime.

It is a super-2 number, since 2×4139687481² = 34274024880696250722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4139687411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1556116 + ... + 1558773.

It is an arithmetic number, because the mean of its divisors is an integer number (691505580).

Almost surely, 2^4139687481 is an apocalyptic number.

It is an amenable number.

4139687481 is a deficient number, since it is larger than the sum of its proper divisors (1392357159).

4139687481 is a wasteful number, since it uses less digits than its factorization.

4139687481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115335.

The product of its digits is 1161216, while the sum is 51.

The square root of 4139687481 is about 64340.4031771639. The cubic root of 4139687481 is about 1605.6683688706.

The spelling of 4139687481 in words is "four billion, one hundred thirty-nine million, six hundred eighty-seven thousand, four hundred eighty-one".