4504678921 has 16 divisors (see below), whose sum is σ = 4844090304. Its totient is φ = 4174032384.

The previous prime is 4504678907. The next prime is 4504678939. The reversal of 4504678921 is 1298764054.

It is a cyclic number.

It is not a de Polignac number, because 4504678921 - 2⁷ = 4504678793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4504678121) 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 15 ways as a sum of consecutive naturals, for example, 288901 + ... + 304093.

It is an arithmetic number, because the mean of its divisors is an integer number (302755644).

Almost surely, 2^4504678921 is an apocalyptic number.

It is an amenable number.

4504678921 is a deficient number, since it is larger than the sum of its proper divisors (339411383).

4504678921 is a wasteful number, since it uses less digits than its factorization.

4504678921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15480.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 4504678921 is about 67116.9048824512. The cubic root of 4504678921 is about 1651.5356283458.

The spelling of 4504678921 in words is "four billion, five hundred four million, six hundred seventy-eight thousand, nine hundred twenty-one".