384040001 has 4 divisors (see below), whose sum is σ = 384080004. Its totient is φ = 384000000.

The previous prime is 384039973. The next prime is 384040003. The reversal of 384040001 is 100040483.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 220225600 + 163814401 = 14840^2 + 12799^2 .

It is a cyclic number.

It is not a de Polignac number, because 384040001 - 2⁶ = 384039937 is a prime.

It is a deceptive number, since it divides R_384040000.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384040003) 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, 4001 + ... + 28001.

It is an arithmetic number, because the mean of its divisors is an integer number (96020001).

Almost surely, 2^384040001 is an apocalyptic number.

384040001 is the 16001-st pentagonal number.

It is an amenable number.

384040001 is a deficient number, since it is larger than the sum of its proper divisors (40003).

384040001 is a wasteful number, since it uses less digits than its factorization.

384040001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40002.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 384040001 is about 19596.9385619285. The cubic root of 384040001 is about 726.8734746735.

Adding to 384040001 its reverse (100040483), we get a palindrome (484080484).

The spelling of 384040001 in words is "three hundred eighty-four million, forty thousand, one".