139804 has 12 divisors (see below), whose sum is σ = 279664. Its totient is φ = 59904.

The previous prime is 139801. The next prime is 139813. The reversal of 139804 is 408931.

139804 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139801) 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, 2469 + ... + 2524.

2¹³⁹⁸⁰⁴ is an apocalyptic number.

139804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

139804 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

139804 is a wasteful number, since it uses less digits than its factorization.

139804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004 (or 5002 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 139804 is about 373.9037309255. The cubic root of 139804 is about 51.9006980625.

The spelling of 139804 in words is "one hundred thirty-nine thousand, eight hundred four".