386973040 has 40 divisors (see below), whose sum is σ = 952639920. Its totient is φ = 145683456.

The previous prime is 386973007. The next prime is 386973049. The reversal of 386973040 is 40379683.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 386972984 and 386973002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386973049) 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, 140910 + ... + 143629.

It is an arithmetic number, because the mean of its divisors is an integer number (23815998).

Almost surely, 2^386973040 is an apocalyptic number.

It is an amenable number.

386973040 is an abundant number, since it is smaller than the sum of its proper divisors (565666880).

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

386973040 is a wasteful number, since it uses less digits than its factorization.

386973040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284569 (or 284563 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 386973040 is about 19671.6303340623. The cubic root of 386973040 is about 728.7192404738.

The spelling of 386973040 in words is "three hundred eighty-six million, nine hundred seventy-three thousand, forty".