396240001 has 8 divisors (see below), whose sum is σ = 398917544. Its totient is φ = 393569280.

The previous prime is 396239983. The next prime is 396240007. The reversal of 396240001 is 100042693.

It can be written as a sum of positive squares in 4 ways, for example, as 99022401 + 297217600 = 9951^2 + 17240^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 396240001 - 2²³ = 387851393 is a prime.

It is a super-2 number, since 2×396240001² = 314012276784960002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396240007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168091 + ... + 170431.

It is an arithmetic number, because the mean of its divisors is an integer number (49864693).

Almost surely, 2^396240001 is an apocalyptic number.

It is an amenable number.

396240001 is a deficient number, since it is larger than the sum of its proper divisors (2677543).

396240001 is a wasteful number, since it uses less digits than its factorization.

396240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 396240001 is about 19905.7780807483. The cubic root of 396240001 is about 734.4903687914.

Adding to 396240001 its reverse (100042693), we get a palindrome (496282694).

The spelling of 396240001 in words is "three hundred ninety-six million, two hundred forty thousand, one".