390129 has 4 divisors (see below), whose sum is σ = 520176. Its totient is φ = 260084.

The previous prime is 390119. The next prime is 390151. The reversal of 390129 is 921093.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 921093 = 3 ⋅307031.

It is a cyclic number.

It is not a de Polignac number, because 390129 - 2⁴ = 390113 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 390099 and 390108.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65019 + ... + 65024.

It is an arithmetic number, because the mean of its divisors is an integer number (130044).

2³⁹⁰¹²⁹ is an apocalyptic number.

It is an amenable number.

390129 is a deficient number, since it is larger than the sum of its proper divisors (130047).

390129 is a wasteful number, since it uses less digits than its factorization.

390129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130046.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 390129 is about 624.6030739598. The cubic root of 390129 is about 73.0694903443.

The spelling of 390129 in words is "three hundred ninety thousand, one hundred twenty-nine".