139844005 has 8 divisors (see below), whose sum is σ = 191786112. Its totient is φ = 95893008.

The previous prime is 139843997. The next prime is 139844017. The reversal of 139844005 is 500448931.

139844005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 139844005 - 2³ = 139843997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997737 + ... + 1997806.

It is an arithmetic number, because the mean of its divisors is an integer number (23973264).

Almost surely, 2^139844005 is an apocalyptic number.

It is an amenable number.

139844005 is a deficient number, since it is larger than the sum of its proper divisors (51942107).

139844005 is an equidigital number, since it uses as much as digits as its factorization.

139844005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3995555.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 139844005 is about 11825.5657369954. The cubic root of 139844005 is about 519.0564806250.

The spelling of 139844005 in words is "one hundred thirty-nine million, eight hundred forty-four thousand, five".