4805121989 has 8 divisors (see below), whose sum is σ = 4918776192. Its totient is φ = 4691554560.

The previous prime is 4805121973. The next prime is 4805122039. The reversal of 4805121989 is 9891215084.

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

It is not a de Polignac number, because 4805121989 - 2⁴ = 4805121973 is a prime.

It is a super-2 number, since 2×4805121989² = 46178394658342632242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4805121929) 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 7 ways as a sum of consecutive naturals, for example, 98084 + ... + 138674.

It is an arithmetic number, because the mean of its divisors is an integer number (614847024).

Almost surely, 2^4805121989 is an apocalyptic number.

It is an amenable number.

4805121989 is a deficient number, since it is larger than the sum of its proper divisors (113654203).

4805121989 is a wasteful number, since it uses less digits than its factorization.

4805121989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43387.

The product of its (nonzero) digits is 207360, while the sum is 47.

The square root of 4805121989 is about 69318.9872185103. The cubic root of 4805121989 is about 1687.4651246492.

The spelling of 4805121989 in words is "four billion, eight hundred five million, one hundred twenty-one thousand, nine hundred eighty-nine".