380612779 has 4 divisors (see below), whose sum is σ = 403001784. Its totient is φ = 358223776.

The previous prime is 380612669. The next prime is 380612783. The reversal of 380612779 is 977216083.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977216083 = 17 ⋅57483299.

It is a cyclic number.

It is not a de Polignac number, because 380612779 - 2¹¹ = 380610731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380612179) 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, 11194477 + ... + 11194510.

It is an arithmetic number, because the mean of its divisors is an integer number (100750446).

Almost surely, 2^380612779 is an apocalyptic number.

380612779 is a deficient number, since it is larger than the sum of its proper divisors (22389005).

380612779 is a wasteful number, since it uses less digits than its factorization.

380612779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22389004.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 380612779 is about 19509.2998080403. The cubic root of 380612779 is about 724.7047733367.

The spelling of 380612779 in words is "three hundred eighty million, six hundred twelve thousand, seven hundred seventy-nine".