404371971 has 12 divisors (see below), whose sum is σ = 598339560. Its totient is φ = 263005920.

The previous prime is 404371949. The next prime is 404371999. The reversal of 404371971 is 179173404.

It is not a de Polignac number, because 404371971 - 2⁶ = 404371907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404371931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 547561 + ... + 548298.

It is an arithmetic number, because the mean of its divisors is an integer number (49861630).

Almost surely, 2^404371971 is an apocalyptic number.

404371971 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

404371971 is a deficient number, since it is larger than the sum of its proper divisors (193967589).

404371971 is a wasteful number, since it uses less digits than its factorization.

404371971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095906 (or 1095903 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 404371971 is about 20109.0022378038. The cubic root of 404371971 is about 739.4809916845.

The spelling of 404371971 in words is "four hundred four million, three hundred seventy-one thousand, nine hundred seventy-one".