1406362221 has 24 divisors (see below), whose sum is σ = 2292507360. Its totient is φ = 822948000.

The previous prime is 1406362183. The next prime is 1406362229. The reversal of 1406362221 is 1222636041.

1406362221 is a `hidden beast` number, since 1 + 4 + 0 + 636 + 2 + 2 + 21 = 666.

It is not a de Polignac number, because 1406362221 - 2⁶ = 1406362157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406362229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242055 + ... + 247796.

It is an arithmetic number, because the mean of its divisors is an integer number (95521140).

Almost surely, 2^1406362221 is an apocalyptic number.

1406362221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1406362221 is a deficient number, since it is larger than the sum of its proper divisors (886145139).

1406362221 is a wasteful number, since it uses less digits than its factorization.

1406362221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489897 (or 489894 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1406362221 is about 37501.4962501498. The cubic root of 1406362221 is about 1120.3809877857.

Adding to 1406362221 its reverse (1222636041), we get a palindrome (2628998262).

The spelling of 1406362221 in words is "one billion, four hundred six million, three hundred sixty-two thousand, two hundred twenty-one".