390854285 has 8 divisors (see below), whose sum is σ = 470418936. Its totient is φ = 311754240.

The previous prime is 390854281. The next prime is 390854323. The reversal of 390854285 is 582458093.

It can be written as a sum of positive squares in 4 ways, for example, as 27227524 + 363626761 = 5218^2 + 19069^2 .

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

It is not a de Polignac number, because 390854285 - 2² = 390854281 is a prime.

It is a super-2 number, since 2×390854285² = 305534144205722450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390854281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114296 + ... + 117665.

It is an arithmetic number, because the mean of its divisors is an integer number (58802367).

Almost surely, 2^390854285 is an apocalyptic number.

It is an amenable number.

390854285 is a deficient number, since it is larger than the sum of its proper divisors (79564651).

390854285 is a wasteful number, since it uses less digits than its factorization.

390854285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232303.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 390854285 is about 19770.0350277889. The cubic root of 390854285 is about 731.1474323719.

The spelling of 390854285 in words is "three hundred ninety million, eight hundred fifty-four thousand, two hundred eighty-five".