4805121539 has 4 divisors (see below), whose sum is σ = 4813308024. Its totient is φ = 4796935056.

The previous prime is 4805121523. The next prime is 4805121557. The reversal of 4805121539 is 9351215084.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4805121539 - 2⁴ = 4805121523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4805124539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4092362 + ... + 4093535.

It is an arithmetic number, because the mean of its divisors is an integer number (1203327006).

Almost surely, 2^4805121539 is an apocalyptic number.

4805121539 is a deficient number, since it is larger than the sum of its proper divisors (8186485).

4805121539 is an equidigital number, since it uses as much as digits as its factorization.

4805121539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8186484.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 4805121539 is about 69318.9839726463. The cubic root of 4805121539 is about 1687.4650719721.

The spelling of 4805121539 in words is "four billion, eight hundred five million, one hundred twenty-one thousand, five hundred thirty-nine".