404478755 has 4 divisors (see below), whose sum is σ = 485374512. Its totient is φ = 323583000.

The previous prime is 404478749. The next prime is 404478761. The reversal of 404478755 is 557874404.

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

It is an interprime number because it is at equal distance from previous prime (404478749) and next prime (404478761).

It is not a de Polignac number, because 404478755 - 2²⁴ = 387701539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40447871 + ... + 40447880.

It is an arithmetic number, because the mean of its divisors is an integer number (121343628).

Almost surely, 2^404478755 is an apocalyptic number.

404478755 is a deficient number, since it is larger than the sum of its proper divisors (80895757).

404478755 is an equidigital number, since it uses as much as digits as its factorization.

404478755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80895756.

The product of its (nonzero) digits is 627200, while the sum is 44.

The square root of 404478755 is about 20111.6571917881. The cubic root of 404478755 is about 739.5460784478.

The spelling of 404478755 in words is "four hundred four million, four hundred seventy-eight thousand, seven hundred fifty-five".