386640822 has 16 divisors (see below), whose sum is σ = 773475840. Its totient is φ = 128847912.

The previous prime is 386640811. The next prime is 386640857. The reversal of 386640822 is 228046683.

It is a super-2 number, since 2×386640822² = 298982250473671368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37923 + ... + 47025.

It is an arithmetic number, because the mean of its divisors is an integer number (48342240).

Almost surely, 2^386640822 is an apocalyptic number.

386640822 is an abundant number, since it is smaller than the sum of its proper divisors (386835018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

386640822 is a wasteful number, since it uses less digits than its factorization.

386640822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16187.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 386640822 is about 19663.1844318259. The cubic root of 386640822 is about 728.5106445802.

The spelling of 386640822 in words is "three hundred eighty-six million, six hundred forty thousand, eight hundred twenty-two".