139700 has 36 divisors (see below), whose sum is σ = 333312. Its totient is φ = 50400.

The previous prime is 139697. The next prime is 139703. The reversal of 139700 is 7931.

It is an interprime number because it is at equal distance from previous prime (139697) and next prime (139703).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139703) 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 11 ways as a sum of consecutive naturals, for example, 1037 + ... + 1163.

2¹³⁹⁷⁰⁰ is an apocalyptic number.

139700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166656).

139700 is an abundant number, since it is smaller than the sum of its proper divisors (193612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139700 is a wasteful number, since it uses less digits than its factorization.

139700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 139700 is about 373.7646318206. The cubic root of 139700 is about 51.8878252510.

Subtracting from 139700 its reverse (7931), we obtain a square (131769 = 363²).

The spelling of 139700 in words is "one hundred thirty-nine thousand, seven hundred".