384091930 has 8 divisors (see below), whose sum is σ = 691365492. Its totient is φ = 153636768.

The previous prime is 384091861. The next prime is 384091937. The reversal of 384091930 is 39190483.

It can be written as a sum of positive squares in 2 ways, for example, as 370601001 + 13490929 = 19251^2 + 3673^2 .

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

It is a super-2 number, since 2×384091930² = 295053221382249800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 384091930.

It is not an unprimeable number, because it can be changed into a prime (384091937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19204587 + ... + 19204606.

Almost surely, 2^384091930 is an apocalyptic number.

384091930 is a deficient number, since it is larger than the sum of its proper divisors (307273562).

384091930 is a wasteful number, since it uses less digits than its factorization.

384091930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38409200.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 384091930 is about 19598.2634434789. The cubic root of 384091930 is about 726.9062352465.

The spelling of 384091930 in words is "three hundred eighty-four million, ninety-one thousand, nine hundred thirty".