384941640 has 32 divisors (see below), whose sum is σ = 1154825280. Its totient is φ = 102651072.

The previous prime is 384941617. The next prime is 384941647. The reversal of 384941640 is 46149483.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (384941647) 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, 1603804 + ... + 1604043.

It is an arithmetic number, because the mean of its divisors is an integer number (36088290).

Almost surely, 2^384941640 is an apocalyptic number.

384941640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

384941640 is an abundant number, since it is smaller than the sum of its proper divisors (769883640).

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

384941640 is a wasteful number, since it uses less digits than its factorization.

384941640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207861 (or 3207857 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 384941640 is about 19619.9296634825. The cubic root of 384941640 is about 727.4418748804.

The spelling of 384941640 in words is "three hundred eighty-four million, nine hundred forty-one thousand, six hundred forty".