139407 has 8 divisors (see below), whose sum is σ = 192000. Its totient is φ = 89880.

The previous prime is 139397. The next prime is 139409. The reversal of 139407 is 704931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139407 - 2⁶ = 139343 is a prime.

139407 is a lucky number.

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 139407.

It is not an unprimeable number, because it can be changed into a prime (139409) 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 7 ways as a sum of consecutive naturals, for example, 657 + ... + 842.

It is an arithmetic number, because the mean of its divisors is an integer number (24000).

2¹³⁹⁴⁰⁷ is an apocalyptic number.

139407 is a deficient number, since it is larger than the sum of its proper divisors (52593).

139407 is a wasteful number, since it uses less digits than its factorization.

139407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 139407 is about 373.3724681869. The cubic root of 139407 is about 51.8515241917.

The spelling of 139407 in words is "one hundred thirty-nine thousand, four hundred seven".