390139 has 6 divisors (see below), whose sum is σ = 401316. Its totient is φ = 379260.

The previous prime is 390119. The next prime is 390151. The reversal of 390139 is 931093.

It is not a de Polignac number, because 390139 - 2⁵ = 390107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1744 + ... + 1954.

It is an arithmetic number, because the mean of its divisors is an integer number (66886).

2³⁹⁰¹³⁹ is an apocalyptic number.

390139 is a deficient number, since it is larger than the sum of its proper divisors (11177).

390139 is an equidigital number, since it uses as much as digits as its factorization.

390139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 390139 is about 624.6110789924. The cubic root of 390139 is about 73.0701146580.

It can be divided in two parts, 390 and 139, that added together give a square (529 = 23²).

The spelling of 390139 in words is "three hundred ninety thousand, one hundred thirty-nine".