3421404 has 36 divisors (see below), whose sum is σ = 9884784. Its totient is φ = 977472.

The previous prime is 3421399. The next prime is 3421417. The reversal of 3421404 is 4041243.

3421404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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, 6537 + ... + 7040.

Almost surely, 2^3421404 is an apocalyptic number.

It is an amenable number.

3421404 is an abundant number, since it is smaller than the sum of its proper divisors (6463380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3421404 is a wasteful number, since it uses less digits than its factorization.

3421404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13594 (or 13589 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 3421404 is about 1849.7037600654. The cubic root of 3421404 is about 150.6843397791.

Adding to 3421404 its reverse (4041243), we get a palindrome (7462647).

The spelling of 3421404 in words is "three million, four hundred twenty-one thousand, four hundred four".