386228869 has 8 divisors (see below), whose sum is σ = 416215800. Its totient is φ = 356281536.

The previous prime is 386228863. The next prime is 386228879. The reversal of 386228869 is 968822683.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18164644 + 368064225 = 4262^2 + 19185^2 .

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

It is not a de Polignac number, because 386228869 - 2⁹ = 386228357 is a prime.

It is a super-2 number, since 2×386228869² = 298345478498038322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386228863) 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, 12207 + ... + 30355.

It is an arithmetic number, because the mean of its divisors is an integer number (52026975).

Almost surely, 2^386228869 is an apocalyptic number.

It is an amenable number.

386228869 is a deficient number, since it is larger than the sum of its proper divisors (29986931).

386228869 is a wasteful number, since it uses less digits than its factorization.

386228869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19799.

The product of its digits is 1990656, while the sum is 52.

The square root of 386228869 is about 19652.7064039536. The cubic root of 386228869 is about 728.2518179741.

The spelling of 386228869 in words is "three hundred eighty-six million, two hundred twenty-eight thousand, eight hundred sixty-nine".