4450221405 has 120 divisors (see below), whose sum is σ = 9421191648. Its totient is φ = 2003424192.

The previous prime is 4450221397. The next prime is 4450221407. The reversal of 4450221405 is 5041220544.

4450221405 is a `hidden beast` number, since 445 + 0 + 2 + 214 + 0 + 5 = 666.

It is not a de Polignac number, because 4450221405 - 2³ = 4450221397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4450221407) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1327942 + ... + 1331288.

Almost surely, 2^4450221405 is an apocalyptic number.

4450221405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4450221405 is an abundant number, since it is smaller than the sum of its proper divisors (4970970243).

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

4450221405 is a wasteful number, since it uses less digits than its factorization.

4450221405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3445 (or 3429 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 4450221405 is about 66709.9798006265. The cubic root of 4450221405 is about 1644.8534349575.

Adding to 4450221405 its reverse (5041220544), we get a palindrome (9491441949).

The spelling of 4450221405 in words is "four billion, four hundred fifty million, two hundred twenty-one thousand, four hundred five".