378393923 has 8 divisors (see below), whose sum is σ = 381696000. Its totient is φ = 375106248.

The previous prime is 378393901. The next prime is 378393959. The reversal of 378393923 is 329393873.

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

It is a cyclic number.

It is not a de Polignac number, because 378393923 - 2²⁰ = 377345347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378393523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52958 + ... + 59676.

It is an arithmetic number, because the mean of its divisors is an integer number (47712000).

Almost surely, 2^378393923 is an apocalyptic number.

378393923 is a deficient number, since it is larger than the sum of its proper divisors (3302077).

378393923 is a wasteful number, since it uses less digits than its factorization.

378393923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7201.

The product of its digits is 734832, while the sum is 47.

The square root of 378393923 is about 19452.3500636813. The cubic root of 378393923 is about 723.2937588453.

Subtracting from 378393923 its reverse (329393873), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 378393923 in words is "three hundred seventy-eight million, three hundred ninety-three thousand, nine hundred twenty-three".