4908030021 has 6 divisors (see below), whose sum is σ = 7089376710. Its totient is φ = 3272020008.

The previous prime is 4908029989. The next prime is 4908030059. The reversal of 4908030021 is 1200308094.

It can be written as a sum of positive squares in only one way, i.e., 4602129921 + 305900100 = 67839^2 + 17490^2 .

It is not a de Polignac number, because 4908030021 - 2⁵ = 4908029989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4908030121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 272668326 + ... + 272668343.

It is an arithmetic number, because the mean of its divisors is an integer number (1181562785).

Almost surely, 2^4908030021 is an apocalyptic number.

It is an amenable number.

4908030021 is a deficient number, since it is larger than the sum of its proper divisors (2181346689).

4908030021 is a wasteful number, since it uses less digits than its factorization.

4908030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545336675 (or 545336672 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 4908030021 is about 70057.3338130991. Note that the first 3 decimals coincide. The cubic root of 4908030021 is about 1699.4265679567.

The spelling of 4908030021 in words is "four billion, nine hundred eight million, thirty thousand, twenty-one".