137847 has 4 divisors (see below), whose sum is σ = 183800. Its totient is φ = 91896.

The previous prime is 137831. The next prime is 137849. The reversal of 137847 is 748731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 137847 - 2⁴ = 137831 is a prime.

It is a D-number.

It is a Duffinian number.

137847 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22972 + ... + 22977.

It is an arithmetic number, because the mean of its divisors is an integer number (45950).

2¹³⁷⁸⁴⁷ is an apocalyptic number.

137847 is a deficient number, since it is larger than the sum of its proper divisors (45953).

137847 is an equidigital number, since it uses as much as digits as its factorization.

137847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45952.

The product of its digits is 4704, while the sum is 30.

The square root of 137847 is about 371.2775242322. The cubic root of 137847 is about 51.6573876272.

The spelling of 137847 in words is "one hundred thirty-seven thousand, eight hundred forty-seven".