4191221559 has 8 divisors (see below), whose sum is σ = 6386623360. Its totient is φ = 2394983736.

The previous prime is 4191221477. The next prime is 4191221561. The reversal of 4191221559 is 9551221914.

It is a happy number.

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

It is not a de Polignac number, because 4191221559 - 2⁸ = 4191221303 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 (4191221159) 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, 99790969 + ... + 99791010.

It is an arithmetic number, because the mean of its divisors is an integer number (798327920).

Almost surely, 2^4191221559 is an apocalyptic number.

4191221559 is a deficient number, since it is larger than the sum of its proper divisors (2195401801).

4191221559 is a wasteful number, since it uses less digits than its factorization.

4191221559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199581989.

The product of its digits is 32400, while the sum is 39.

The square root of 4191221559 is about 64739.6444151495. The cubic root of 4191221559 is about 1612.3037835399.

The spelling of 4191221559 in words is "four billion, one hundred ninety-one million, two hundred twenty-one thousand, five hundred fifty-nine".