378940207 has 4 divisors (see below), whose sum is σ = 379089720. Its totient is φ = 378790696.

The previous prime is 378940181. The next prime is 378940213. The reversal of 378940207 is 702049873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378940207 - 2¹¹ = 378938159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378940207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378940307) 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, 70888 + ... + 76045.

It is an arithmetic number, because the mean of its divisors is an integer number (94772430).

Almost surely, 2^378940207 is an apocalyptic number.

378940207 is a deficient number, since it is larger than the sum of its proper divisors (149513).

378940207 is a wasteful number, since it uses less digits than its factorization.

378940207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149512.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 378940207 is about 19466.3865933049. The cubic root of 378940207 is about 723.6416624369.

The spelling of 378940207 in words is "three hundred seventy-eight million, nine hundred forty thousand, two hundred seven".