4855639987 has 8 divisors (see below), whose sum is σ = 5299699392. Its totient is φ = 4412020200.

The previous prime is 4855639927. The next prime is 4855639993. The reversal of 4855639987 is 7899365584.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4855639987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4855639927) 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, 86589 + ... + 131182.

It is an arithmetic number, because the mean of its divisors is an integer number (662462424).

Almost surely, 2^4855639987 is an apocalyptic number.

4855639987 is a deficient number, since it is larger than the sum of its proper divisors (444059405).

4855639987 is a wasteful number, since it uses less digits than its factorization.

4855639987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219809.

The product of its digits is 65318400, while the sum is 64.

The square root of 4855639987 is about 69682.4223674809. The cubic root of 4855639987 is about 1693.3581659520.

The spelling of 4855639987 in words is "four billion, eight hundred fifty-five million, six hundred thirty-nine thousand, nine hundred eighty-seven".