378885777 has 8 divisors (see below), whose sum is σ = 506967264. Its totient is φ = 251697408.

The previous prime is 378885763. The next prime is 378885779. The reversal of 378885777 is 777588873.

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

It is not a de Polignac number, because 378885777 - 2⁴ = 378885761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378885777.

It is not an unprimeable number, because it can be changed into a prime (378885779) 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, 222288 + ... + 223985.

It is an arithmetic number, because the mean of its divisors is an integer number (63370908).

Almost surely, 2^378885777 is an apocalyptic number.

It is an amenable number.

378885777 is a deficient number, since it is larger than the sum of its proper divisors (128081487).

378885777 is a wasteful number, since it uses less digits than its factorization.

378885777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446559.

The product of its digits is 18439680, while the sum is 60.

The square root of 378885777 is about 19464.9884921620. The cubic root of 378885777 is about 723.6070134334.

The spelling of 378885777 in words is "three hundred seventy-eight million, eight hundred eighty-five thousand, seven hundred seventy-seven".