404833421 has 4 divisors (see below), whose sum is σ = 405003744. Its totient is φ = 404663100.

The previous prime is 404833411. The next prime is 404833423. The reversal of 404833421 is 124338404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404833421 - 2⁶ = 404833357 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 (404833423) 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, 81545 + ... + 86366.

It is an arithmetic number, because the mean of its divisors is an integer number (101250936).

Almost surely, 2^404833421 is an apocalyptic number.

It is an amenable number.

404833421 is a deficient number, since it is larger than the sum of its proper divisors (170323).

404833421 is a wasteful number, since it uses less digits than its factorization.

404833421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170322.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 404833421 is about 20120.4726833144. The cubic root of 404833421 is about 739.7621715638.

The spelling of 404833421 in words is "four hundred four million, eight hundred thirty-three thousand, four hundred twenty-one".