139937 has 4 divisors (see below), whose sum is σ = 159936. Its totient is φ = 119940.

The previous prime is 139921. The next prime is 139939. The reversal of 139937 is 739931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139937 - 2⁴ = 139921 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139937.

It is not an unprimeable number, because it can be changed into a prime (139939) 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, 9989 + ... + 10002.

It is an arithmetic number, because the mean of its divisors is an integer number (39984).

2¹³⁹⁹³⁷ is an apocalyptic number.

It is an amenable number.

139937 is a deficient number, since it is larger than the sum of its proper divisors (19999).

139937 is an equidigital number, since it uses as much as digits as its factorization.

139937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19998.

The product of its digits is 5103, while the sum is 32.

The square root of 139937 is about 374.0815419130. The cubic root of 139937 is about 51.9171511088.

The spelling of 139937 in words is "one hundred thirty-nine thousand, nine hundred thirty-seven".