139853 has 4 divisors (see below), whose sum is σ = 159840. Its totient is φ = 119868.

The previous prime is 139837. The next prime is 139861. The reversal of 139853 is 358931.

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 not a de Polignac number, because 139853 - 2⁴ = 139837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9983 + ... + 9996.

It is an arithmetic number, because the mean of its divisors is an integer number (39960).

2¹³⁹⁸⁵³ is an apocalyptic number.

It is an amenable number.

139853 is a deficient number, since it is larger than the sum of its proper divisors (19987).

139853 is an equidigital number, since it uses as much as digits as its factorization.

139853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19986.

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

The square root of 139853 is about 373.9692500728. The cubic root of 139853 is about 51.9067609246.

The spelling of 139853 in words is "one hundred thirty-nine thousand, eight hundred fifty-three".