4661221405 has 8 divisors (see below), whose sum is σ = 5618107872. Its totient is φ = 3712549008.

The previous prime is 4661221403. The next prime is 4661221421. The reversal of 4661221405 is 5041221664.

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 4661221405 - 2¹ = 4661221403 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 (4661221403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2052267 + ... + 2054536.

It is an arithmetic number, because the mean of its divisors is an integer number (702263484).

Almost surely, 2^4661221405 is an apocalyptic number.

It is an amenable number.

4661221405 is a deficient number, since it is larger than the sum of its proper divisors (956886467).

4661221405 is a wasteful number, since it uses less digits than its factorization.

4661221405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107035.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 4661221405 is about 68273.1382389883. The cubic root of 4661221405 is about 1670.4490891854.

The spelling of 4661221405 in words is "four billion, six hundred sixty-one million, two hundred twenty-one thousand, four hundred five".