404234291 has 4 divisors (see below), whose sum is σ = 425509800. Its totient is φ = 382958784.

The previous prime is 404234261. The next prime is 404234317. The reversal of 404234291 is 192432404.

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

It is a cyclic number.

It is not a de Polignac number, because 404234291 - 2²² = 400039987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404234221) 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, 10637726 + ... + 10637763.

It is an arithmetic number, because the mean of its divisors is an integer number (106377450).

Almost surely, 2^404234291 is an apocalyptic number.

404234291 is a deficient number, since it is larger than the sum of its proper divisors (21275509).

404234291 is a wasteful number, since it uses less digits than its factorization.

404234291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21275508.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 404234291 is about 20105.5786039596. The cubic root of 404234291 is about 739.3970563416.

Adding to 404234291 its reverse (192432404), we get a palindrome (596666695).

The spelling of 404234291 in words is "four hundred four million, two hundred thirty-four thousand, two hundred ninety-one".