384909442 has 8 divisors (see below), whose sum is σ = 579560256. Its totient is φ = 191722692.

The previous prime is 384909433. The next prime is 384909523. The reversal of 384909442 is 244909483.

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

It is a super-3 number, since 3×384909442³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365358 + ... + 366409.

It is an arithmetic number, because the mean of its divisors is an integer number (72445032).

Almost surely, 2^384909442 is an apocalyptic number.

384909442 is a deficient number, since it is larger than the sum of its proper divisors (194650814).

384909442 is a wasteful number, since it uses less digits than its factorization.

384909442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732032.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 384909442 is about 19619.1091031168. The cubic root of 384909442 is about 727.4215923024.

The spelling of 384909442 in words is "three hundred eighty-four million, nine hundred nine thousand, four hundred forty-two".