47686839 has 8 divisors (see below), whose sum is σ = 63775872. Its totient is φ = 31694520.

The previous prime is 47686831. The next prime is 47686841. The reversal of 47686839 is 93868674.

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

It is not a de Polignac number, because 47686839 - 2³ = 47686831 is a prime.

It is a super-2 number, since 2×47686839² = 4548069227623842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47686791 and 47686800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47686831) 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, 23019 + ... + 25004.

It is an arithmetic number, because the mean of its divisors is an integer number (7971984).

Almost surely, 2^47686839 is an apocalyptic number.

47686839 is a deficient number, since it is larger than the sum of its proper divisors (16089033).

47686839 is a wasteful number, since it uses less digits than its factorization.

47686839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48357.

The product of its digits is 1741824, while the sum is 51.

The square root of 47686839 is about 6905.5657986873. The cubic root of 47686839 is about 362.6320444837.

The spelling of 47686839 in words is "forty-seven million, six hundred eighty-six thousand, eight hundred thirty-nine".