408968867 has 4 divisors (see below), whose sum is σ = 409464216. Its totient is φ = 408473520.

The previous prime is 408968837. The next prime is 408968869. The reversal of 408968867 is 768869804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 408968867 - 2⁶ = 408968803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408968869) 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 3 ways as a sum of consecutive naturals, for example, 246434 + ... + 248087.

It is an arithmetic number, because the mean of its divisors is an integer number (102366054).

Almost surely, 2^408968867 is an apocalyptic number.

408968867 is a deficient number, since it is larger than the sum of its proper divisors (495349).

408968867 is an equidigital number, since it uses as much as digits as its factorization.

408968867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495348.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The square root of 408968867 is about 20222.9786876217. The cubic root of 408968867 is about 742.2725772067.

The spelling of 408968867 in words is "four hundred eight million, nine hundred sixty-eight thousand, eight hundred sixty-seven".