139736 has 8 divisors (see below), whose sum is σ = 262020. Its totient is φ = 69864.

The previous prime is 139729. The next prime is 139739. The reversal of 139736 is 637931.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×139736² = 39052299392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139699 and 139708.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139736.

It is not an unprimeable number, because it can be changed into a prime (139739) 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 as a sum of consecutive naturals, namely, 8726 + ... + 8741.

2¹³⁹⁷³⁶ is an apocalyptic number.

It is an amenable number.

139736 is a deficient number, since it is larger than the sum of its proper divisors (122284).

139736 is a wasteful number, since it uses less digits than its factorization.

139736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17473 (or 17469 counting only the distinct ones).

The product of its digits is 3402, while the sum is 29.

The square root of 139736 is about 373.8127873682. The cubic root of 139736 is about 51.8922819470.

It can be divided in two parts, 13973 and 6, that multiplied together give a palindrome (83838).

The spelling of 139736 in words is "one hundred thirty-nine thousand, seven hundred thirty-six".