394589490 has 32 divisors (see below), whose sum is σ = 948174336. Its totient is φ = 105095040.

The previous prime is 394589477. The next prime is 394589491. The reversal of 394589490 is 94985493.

It is a super-3 number, since 3×394589490³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (394589491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18270 + ... + 33510.

It is an arithmetic number, because the mean of its divisors is an integer number (29630448).

Almost surely, 2^394589490 is an apocalyptic number.

394589490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

394589490 is an abundant number, since it is smaller than the sum of its proper divisors (553584846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394589490 is a wasteful number, since it uses less digits than its factorization.

394589490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16114.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 394589490 is about 19864.2767298485. The cubic root of 394589490 is about 733.4691261390.

The spelling of 394589490 in words is "three hundred ninety-four million, five hundred eighty-nine thousand, four hundred ninety".