390045 has 8 divisors (see below), whose sum is σ = 624096. Its totient is φ = 208016.

The previous prime is 390043. The next prime is 390067. The reversal of 390045 is 540093.

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 390045 - 2¹ = 390043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390043) 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 7 ways as a sum of consecutive naturals, for example, 12987 + ... + 13016.

It is an arithmetic number, because the mean of its divisors is an integer number (78012).

2³⁹⁰⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

390045 is a deficient number, since it is larger than the sum of its proper divisors (234051).

390045 is a wasteful number, since it uses less digits than its factorization.

390045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26011.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 390045 is about 624.5358276352. The cubic root of 390045 is about 73.0642456878.

The spelling of 390045 in words is "three hundred ninety thousand, forty-five".