404942871 has 8 divisors (see below), whose sum is σ = 540044800. Its totient is φ = 269901432.

The previous prime is 404942869. The next prime is 404942887. The reversal of 404942871 is 178249404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404942871 - 2¹ = 404942869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404942831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3930 + ... + 28728.

It is an arithmetic number, because the mean of its divisors is an integer number (67505600).

Almost surely, 2^404942871 is an apocalyptic number.

404942871 is a deficient number, since it is larger than the sum of its proper divisors (135101929).

404942871 is a wasteful number, since it uses less digits than its factorization.

404942871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30245.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 404942871 is about 20123.1923660238. The cubic root of 404942871 is about 739.8288324584.

It can be divided in two parts, 40494 and 2871, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 404942871 in words is "four hundred four million, nine hundred forty-two thousand, eight hundred seventy-one".