390383285 has 4 divisors (see below), whose sum is σ = 468459948. Its totient is φ = 312306624.

The previous prime is 390383267. The next prime is 390383293. The reversal of 390383285 is 582383093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582383093 = 17 ⋅34257829.

It can be written as a sum of positive squares in 2 ways, for example, as 90193009 + 300190276 = 9497^2 + 17326^2 .

It is a cyclic number.

It is not a de Polignac number, because 390383285 - 2⁶ = 390383221 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 3 ways as a sum of consecutive naturals, for example, 39038324 + ... + 39038333.

It is an arithmetic number, because the mean of its divisors is an integer number (117114987).

Almost surely, 2^390383285 is an apocalyptic number.

It is an amenable number.

390383285 is a deficient number, since it is larger than the sum of its proper divisors (78076663).

390383285 is an equidigital number, since it uses as much as digits as its factorization.

390383285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78076662.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 390383285 is about 19758.1194702330. The cubic root of 390383285 is about 730.8536239334.

The spelling of 390383285 in words is "three hundred ninety million, three hundred eighty-three thousand, two hundred eighty-five".