394837490 has 16 divisors (see below), whose sum is σ = 717351552. Its totient is φ = 156458544.

The previous prime is 394837477. The next prime is 394837501. The reversal of 394837490 is 94738493.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183434 + ... + 185573.

It is an arithmetic number, because the mean of its divisors is an integer number (44834472).

Almost surely, 2^394837490 is an apocalyptic number.

394837490 is a deficient number, since it is larger than the sum of its proper divisors (322514062).

394837490 is a wasteful number, since it uses less digits than its factorization.

394837490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369121.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 394837490 is about 19870.5181110106. The cubic root of 394837490 is about 733.6227560531.

The spelling of 394837490 in words is "three hundred ninety-four million, eight hundred thirty-seven thousand, four hundred ninety".