379778647 has 4 divisors (see below), whose sum is σ = 379891656. Its totient is φ = 379665640.

The previous prime is 379778639. The next prime is 379778653. The reversal of 379778647 is 746877973.

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 379778647 - 2³ = 379778639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 379778591 and 379778600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379778687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51304 + ... + 58237.

It is an arithmetic number, because the mean of its divisors is an integer number (94972914).

Almost surely, 2^379778647 is an apocalyptic number.

379778647 is a deficient number, since it is larger than the sum of its proper divisors (113009).

379778647 is a wasteful number, since it uses less digits than its factorization.

379778647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113008.

The product of its digits is 12446784, while the sum is 58.

The square root of 379778647 is about 19487.9102779133. The cubic root of 379778647 is about 724.1749771670.

The spelling of 379778647 in words is "three hundred seventy-nine million, seven hundred seventy-eight thousand, six hundred forty-seven".