386747892 has 72 divisors (see below), whose sum is σ = 1065216320. Its totient is φ = 121322880.

The previous prime is 386747833. The next prime is 386747899. The reversal of 386747892 is 298747683.

386747892 is a `hidden beast` number, since 3 + 86 + 7 + 478 + 92 = 666.

It is a super-4 number, since 4×386747892⁴ (a number of 35 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386747899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25017 + ... + 37407.

Almost surely, 2^386747892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386747892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (532608160).

386747892 is an abundant number, since it is smaller than the sum of its proper divisors (678468428).

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

386747892 is a wasteful number, since it uses less digits than its factorization.

386747892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12438 (or 12413 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 386747892 is about 19665.9068440792. The cubic root of 386747892 is about 728.5778856571.

The spelling of 386747892 in words is "three hundred eighty-six million, seven hundred forty-seven thousand, eight hundred ninety-two".