139413 has 4 divisors (see below), whose sum is σ = 185888. Its totient is φ = 92940.

The previous prime is 139409. The next prime is 139423. The reversal of 139413 is 314931.

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 139413 - 2² = 139409 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 139413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139423) 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, 23233 + ... + 23238.

It is an arithmetic number, because the mean of its divisors is an integer number (46472).

2¹³⁹⁴¹³ is an apocalyptic number.

It is an amenable number.

139413 is a deficient number, since it is larger than the sum of its proper divisors (46475).

139413 is an equidigital number, since it uses as much as digits as its factorization.

139413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46474.

The product of its digits is 324, while the sum is 21.

The square root of 139413 is about 373.3805029725. The cubic root of 139413 is about 51.8522680680.

The spelling of 139413 in words is "one hundred thirty-nine thousand, four hundred thirteen".