408216001 has 2 divisors, whose sum is σ = 408216002. Its totient is φ = 408216000.

The previous prime is 408215999. The next prime is 408216031. The reversal of 408216001 is 100612804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248850625 + 159365376 = 15775^2 + 12624^2 .

It is a cyclic number.

It is not a de Polignac number, because 408216001 - 2¹ = 408215999 is a prime.

Together with 408215999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (408216031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204108000 + 204108001.

It is an arithmetic number, because the mean of its divisors is an integer number (204108001).

Almost surely, 2^408216001 is an apocalyptic number.

It is an amenable number.

408216001 is a deficient number, since it is larger than the sum of its proper divisors (1).

408216001 is an equidigital number, since it uses as much as digits as its factorization.

408216001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 408216001 is about 20204.3559907264. The cubic root of 408216001 is about 741.8168171248.

Adding to 408216001 its reverse (100612804), we get a palindrome (508828805).

The spelling of 408216001 in words is "four hundred eight million, two hundred sixteen thousand, one".