386220437 has 8 divisors (see below), whose sum is σ = 388190232. Its totient is φ = 384256000.

The previous prime is 386220427. The next prime is 386220449. The reversal of 386220437 is 734022683.

It can be written as a sum of positive squares in 4 ways, for example, as 5541316 + 380679121 = 2354^2 + 19511^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 386220437 - 2⁸ = 386220181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 386220397 and 386220406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386220407) 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, 240437 + ... + 242037.

It is an arithmetic number, because the mean of its divisors is an integer number (48523779).

Almost surely, 2^386220437 is an apocalyptic number.

It is an amenable number.

386220437 is a deficient number, since it is larger than the sum of its proper divisors (1969795).

386220437 is a wasteful number, since it uses less digits than its factorization.

386220437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 386220437 is about 19652.4918776220. The cubic root of 386220437 is about 728.2465182978.

The spelling of 386220437 in words is "three hundred eighty-six million, two hundred twenty thousand, four hundred thirty-seven".