378321939 has 24 divisors (see below), whose sum is σ = 584672400. Its totient is φ = 235016640.

The previous prime is 378321919. The next prime is 378321997. The reversal of 378321939 is 939123873.

It is not a de Polignac number, because 378321939 - 2⁸ = 378321683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 378321894 and 378321903.

It is not an unprimeable number, because it can be changed into a prime (378321919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7704 + ... + 28565.

It is an arithmetic number, because the mean of its divisors is an integer number (24361350).

Almost surely, 2^378321939 is an apocalyptic number.

378321939 is a deficient number, since it is larger than the sum of its proper divisors (206350461).

378321939 is a wasteful number, since it uses less digits than its factorization.

378321939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36355 (or 36352 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 378321939 is about 19450.4997108043. The cubic root of 378321939 is about 723.2478905260.

The spelling of 378321939 in words is "three hundred seventy-eight million, three hundred twenty-one thousand, nine hundred thirty-nine".