404278867 has 2 divisors, whose sum is σ = 404278868. Its totient is φ = 404278866.

The previous prime is 404278841. The next prime is 404278883. The reversal of 404278867 is 768872404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404278867 - 2²⁷ = 270061139 is a prime.

It is not a weakly prime, because it can be changed into another prime (404278817) 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 as a sum of consecutive naturals, namely, 202139433 + 202139434.

It is an arithmetic number, because the mean of its divisors is an integer number (202139434).

Almost surely, 2^404278867 is an apocalyptic number.

404278867 is a deficient number, since it is larger than the sum of its proper divisors (1).

404278867 is an equidigital number, since it uses as much as digits as its factorization.

404278867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 602112, while the sum is 46.

The square root of 404278867 is about 20106.6871214529. The cubic root of 404278867 is about 739.4242337752.

It can be divided in two parts, 40427 and 8867, that added together give a palindrome (49294).

The spelling of 404278867 in words is "four hundred four million, two hundred seventy-eight thousand, eight hundred sixty-seven".