139835 has 4 divisors (see below), whose sum is σ = 167808. Its totient is φ = 111864.

The previous prime is 139831. The next prime is 139837. The reversal of 139835 is 538931.

139835 = T₂₃₄ + T₂₃₅ + ... + T₂₃₈.

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

It is a cyclic number.

It is not a de Polignac number, because 139835 - 2² = 139831 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 139798 and 139807.

It is not an unprimeable number, because it can be changed into a prime (139831) 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, 13979 + ... + 13988.

It is an arithmetic number, because the mean of its divisors is an integer number (41952).

2¹³⁹⁸³⁵ is an apocalyptic number.

139835 is a deficient number, since it is larger than the sum of its proper divisors (27973).

139835 is an equidigital number, since it uses as much as digits as its factorization.

139835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27972.

The product of its digits is 3240, while the sum is 29.

The square root of 139835 is about 373.9451831485. The cubic root of 139835 is about 51.9045339154.

The spelling of 139835 in words is "one hundred thirty-nine thousand, eight hundred thirty-five".