404255847 has 8 divisors (see below), whose sum is σ = 542124144. Its totient is φ = 267945728.

The previous prime is 404255791. The next prime is 404255851. The reversal of 404255847 is 748552404.

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 404255847 - 2²³ = 395867239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404255147) 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, 388938 + ... + 389975.

It is an arithmetic number, because the mean of its divisors is an integer number (67765518).

Almost surely, 2^404255847 is an apocalyptic number.

404255847 is a deficient number, since it is larger than the sum of its proper divisors (137868297).

404255847 is a wasteful number, since it uses less digits than its factorization.

404255847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779089.

The product of its (nonzero) digits is 179200, while the sum is 39.

The square root of 404255847 is about 20106.1146669365. The cubic root of 404255847 is about 739.4101990166.

The spelling of 404255847 in words is "four hundred four million, two hundred fifty-five thousand, eight hundred forty-seven".