1404304421 has 16 divisors (see below), whose sum is σ = 1593627840. Its totient is φ = 1226741760.

The previous prime is 1404304409. The next prime is 1404304423. The reversal of 1404304421 is 1244034041.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1404304421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404304423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282326 + ... + 287256.

It is an arithmetic number, because the mean of its divisors is an integer number (99601740).

Almost surely, 2^1404304421 is an apocalyptic number.

It is an amenable number.

1404304421 is a deficient number, since it is larger than the sum of its proper divisors (189323419).

1404304421 is a wasteful number, since it uses less digits than its factorization.

1404304421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6116.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1404304421 is about 37474.0499679445. The cubic root of 1404304421 is about 1119.8342710243.

Adding to 1404304421 its reverse (1244034041), we get a palindrome (2648338462).

The spelling of 1404304421 in words is "one billion, four hundred four million, three hundred four thousand, four hundred twenty-one".