390605285 has 8 divisors (see below), whose sum is σ = 535687296. Its totient is φ = 267843600.

The previous prime is 390605273. The next prime is 390605351. The reversal of 390605285 is 582506093.

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

It is not a de Polignac number, because 390605285 - 2¹⁶ = 390539749 is a prime.

It is a Duffinian number.

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, 5580041 + ... + 5580110.

It is an arithmetic number, because the mean of its divisors is an integer number (66960912).

Almost surely, 2^390605285 is an apocalyptic number.

390605285 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

390605285 is a deficient number, since it is larger than the sum of its proper divisors (145082011).

390605285 is a wasteful number, since it uses less digits than its factorization.

390605285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11160163.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 390605285 is about 19763.7366153266. The cubic root of 390605285 is about 730.9921363176.

The spelling of 390605285 in words is "three hundred ninety million, six hundred five thousand, two hundred eighty-five".