384194990 has 16 divisors (see below), whose sum is σ = 721618848. Its totient is φ = 146996256.

The previous prime is 384194977. The next prime is 384195001. The reversal of 384194990 is 99491483.

It is a super-2 number, since 2×384194990² = 295211580682200200, which contains 22 as substring.

It is a congruent 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, 834977 + ... + 835436.

It is an arithmetic number, because the mean of its divisors is an integer number (45101178).

Almost surely, 2^384194990 is an apocalyptic number.

384194990 is a deficient number, since it is larger than the sum of its proper divisors (337423858).

384194990 is a wasteful number, since it uses less digits than its factorization.

384194990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670443.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 384194990 is about 19600.8925817168. The cubic root of 384194990 is about 726.9712442121.

The spelling of 384194990 in words is "three hundred eighty-four million, one hundred ninety-four thousand, nine hundred ninety".