137947 has 2 divisors, whose sum is σ = 137948. Its totient is φ = 137946.

The previous prime is 137941. The next prime is 137957. The reversal of 137947 is 749731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137947 - 2¹¹ = 135899 is a prime.

It is not a weakly prime, because it can be changed into another prime (137941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68973 + 68974.

It is an arithmetic number, because the mean of its divisors is an integer number (68974).

2¹³⁷⁹⁴⁷ is an apocalyptic number.

137947 is a deficient number, since it is larger than the sum of its proper divisors (1).

137947 is an equidigital number, since it uses as much as digits as its factorization.

137947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 31.

The square root of 137947 is about 371.4121699675. The cubic root of 137947 is about 51.6698760869.

The spelling of 137947 in words is "one hundred thirty-seven thousand, nine hundred forty-seven".