383949478 has 8 divisors (see below), whose sum is σ = 628281000. Its totient is φ = 174522480.

The previous prime is 383949431. The next prime is 383949493. The reversal of 383949478 is 874949383.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8726103 + ... + 8726146.

It is an arithmetic number, because the mean of its divisors is an integer number (78535125).

Almost surely, 2^383949478 is an apocalyptic number.

383949478 is a deficient number, since it is larger than the sum of its proper divisors (244331522).

383949478 is a wasteful number, since it uses less digits than its factorization.

383949478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17452262.

The product of its digits is 5225472, while the sum is 55.

The square root of 383949478 is about 19594.6288048536. The cubic root of 383949478 is about 726.8163591492.

The spelling of 383949478 in words is "three hundred eighty-three million, nine hundred forty-nine thousand, four hundred seventy-eight".