11408221 has 8 divisors (see below), whose sum is σ = 12616704. Its totient is φ = 10228320.

The previous prime is 11408213. The next prime is 11408231. The reversal of 11408221 is 12280411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11408221 - 2³ = 11408213 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 (11408231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6301 + ... + 7906.

It is an arithmetic number, because the mean of its divisors is an integer number (1577088).

Almost surely, 2^11408221 is an apocalyptic number.

11408221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11408221 is a deficient number, since it is larger than the sum of its proper divisors (1208483).

11408221 is a wasteful number, since it uses less digits than its factorization.

11408221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14291.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 11408221 is about 3377.6058088534. The cubic root of 11408221 is about 225.1157988288.

Adding to 11408221 its reverse (12280411), we get a palindrome (23688632).

The spelling of 11408221 in words is "eleven million, four hundred eight thousand, two hundred twenty-one".