386720220049 has 4 divisors (see below), whose sum is σ = 396152420580. Its totient is φ = 377288019520.

The previous prime is 386720220037. The next prime is 386720220077. The reversal of 386720220049 is 940022027683.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15665025600 + 371055194449 = 125160^2 + 609143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386720220049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 386720219987 and 386720220014.

It is not an unprimeable number, because it can be changed into a prime (386720220149) 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, 4716100204 + ... + 4716100285.

It is an arithmetic number, because the mean of its divisors is an integer number (99038105145).

Almost surely, 2^386720220049 is an apocalyptic number.

It is an amenable number.

386720220049 is a deficient number, since it is larger than the sum of its proper divisors (9432200531).

386720220049 is an equidigital number, since it uses as much as digits as its factorization.

386720220049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9432200530.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 386720220049 in words is "three hundred eighty-six billion, seven hundred twenty million, two hundred twenty thousand, forty-nine".