386407093840 has 20 divisors (see below), whose sum is σ = 898396493364. Its totient is φ = 154562837504.

The previous prime is 386407093823. The next prime is 386407093847. The reversal of 386407093840 is 48390704683.

It can be written as a sum of positive squares in 2 ways, for example, as 155876515344 + 230530578496 = 394812^2 + 480136^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386407093847) 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, 2415044257 + ... + 2415044416.

Almost surely, 2^386407093840 is an apocalyptic number.

It is an amenable number.

386407093840 is an abundant number, since it is smaller than the sum of its proper divisors (511989399524).

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

386407093840 is a wasteful number, since it uses less digits than its factorization.

386407093840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830088686 (or 4830088680 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 386407093840 in words is "three hundred eighty-six billion, four hundred seven million, ninety-three thousand, eight hundred forty".