390545 has 8 divisors (see below), whose sum is σ = 493440. Its totient is φ = 295920.

The previous prime is 390539. The next prime is 390553. The reversal of 390545 is 545093.

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

It is not a de Polignac number, because 390545 - 2⁸ = 390289 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1961 + ... + 2150.

It is an arithmetic number, because the mean of its divisors is an integer number (61680).

2³⁹⁰⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

390545 is a deficient number, since it is larger than the sum of its proper divisors (102895).

390545 is a wasteful number, since it uses less digits than its factorization.

390545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 390545 is about 624.9359967229. The cubic root of 390545 is about 73.0954527910.

The spelling of 390545 in words is "three hundred ninety thousand, five hundred forty-five".