404671143 has 4 divisors (see below), whose sum is σ = 539561528. Its totient is φ = 269780760.

The previous prime is 404671123. The next prime is 404671153. The reversal of 404671143 is 341176404.

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

It is not a de Polignac number, because 404671143 - 2¹² = 404667047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404671143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404671123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67445188 + ... + 67445193.

It is an arithmetic number, because the mean of its divisors is an integer number (134890382).

Almost surely, 2^404671143 is an apocalyptic number.

404671143 is a deficient number, since it is larger than the sum of its proper divisors (134890385).

404671143 is a wasteful number, since it uses less digits than its factorization.

404671143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134890384.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 404671143 is about 20116.4396203702. The cubic root of 404671143 is about 739.6633134793.

The spelling of 404671143 in words is "four hundred four million, six hundred seventy-one thousand, one hundred forty-three".