1404026221 has 4 divisors (see below), whose sum is σ = 1512028252. Its totient is φ = 1296024192.

The previous prime is 1404026219. The next prime is 1404026227. The reversal of 1404026221 is 1226204041.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63441225 + 1340584996 = 7965^2 + 36614^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404026221 - 2¹ = 1404026219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1404026192 and 1404026201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404026227) 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, 54000996 + ... + 54001021.

It is an arithmetic number, because the mean of its divisors is an integer number (378007063).

Almost surely, 2^1404026221 is an apocalyptic number.

It is an amenable number.

1404026221 is a deficient number, since it is larger than the sum of its proper divisors (108002031).

1404026221 is a wasteful number, since it uses less digits than its factorization.

1404026221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108002030.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1404026221 is about 37470.3378821168. The cubic root of 1404026221 is about 1119.7603178120.

The spelling of 1404026221 in words is "one billion, four hundred four million, twenty-six thousand, two hundred twenty-one".