390328855 has 16 divisors (see below), whose sum is σ = 546235200. Its totient is φ = 267652896.

The previous prime is 390328817. The next prime is 390328889. The reversal of 390328855 is 558823093.

It is not a de Polignac number, because 390328855 - 2¹⁹ = 389804567 is a prime.

It is a super-2 number, since 2×390328855² = 304713230091222050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112084 + ... + 115513.

It is an arithmetic number, because the mean of its divisors is an integer number (34139700).

Almost surely, 2^390328855 is an apocalyptic number.

390328855 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

390328855 is a deficient number, since it is larger than the sum of its proper divisors (155906345).

390328855 is an equidigital number, since it uses as much as digits as its factorization.

390328855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227623 (or 227609 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 390328855 is about 19756.7420138038. The cubic root of 390328855 is about 730.8196554267.

The spelling of 390328855 in words is "three hundred ninety million, three hundred twenty-eight thousand, eight hundred fifty-five".