4905390857 has 2 divisors, whose sum is σ = 4905390858. Its totient is φ = 4905390856.

The previous prime is 4905390811. The next prime is 4905390859. The reversal of 4905390857 is 7580935094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3503337721 + 1402053136 = 59189^2 + 37444^2 .

It is a cyclic number.

It is not a de Polignac number, because 4905390857 - 2⁶ = 4905390793 is a prime.

Together with 4905390859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4905390859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2452695428 + 2452695429.

It is an arithmetic number, because the mean of its divisors is an integer number (2452695429).

Almost surely, 2^4905390857 is an apocalyptic number.

It is an amenable number.

4905390857 is a deficient number, since it is larger than the sum of its proper divisors (1).

4905390857 is an equidigital number, since it uses as much as digits as its factorization.

4905390857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The square root of 4905390857 is about 70038.4955363834. The cubic root of 4905390857 is about 1699.1219060354.

The spelling of 4905390857 in words is "four billion, nine hundred five million, three hundred ninety thousand, eight hundred fifty-seven".