47986861 has 8 divisors (see below), whose sum is σ = 51734144. Its totient is φ = 44247600.

The previous prime is 47986811. The next prime is 47986867. The reversal of 47986861 is 16868974.

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

It is a cyclic number.

It is not a de Polignac number, because 47986861 - 2¹⁷ = 47855789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47986867) 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, 17536 + ... + 20086.

It is an arithmetic number, because the mean of its divisors is an integer number (6466768).

Almost surely, 2^47986861 is an apocalyptic number.

It is an amenable number.

47986861 is a deficient number, since it is larger than the sum of its proper divisors (3747283).

47986861 is a wasteful number, since it uses less digits than its factorization.

47986861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011.

The product of its digits is 580608, while the sum is 49.

The square root of 47986861 is about 6927.2549397290. The cubic root of 47986861 is about 363.3909556133.

The spelling of 47986861 in words is "forty-seven million, nine hundred eighty-six thousand, eight hundred sixty-one".