4991846407 has 2 divisors, whose sum is σ = 4991846408. Its totient is φ = 4991846406.

The previous prime is 4991846401. The next prime is 4991846411. The reversal of 4991846407 is 7046481994.

4991846407 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4991846407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4991846401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2495923203 + 2495923204.

It is an arithmetic number, because the mean of its divisors is an integer number (2495923204).

Almost surely, 2^4991846407 is an apocalyptic number.

4991846407 is a deficient number, since it is larger than the sum of its proper divisors (1).

4991846407 is an equidigital number, since it uses as much as digits as its factorization.

4991846407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 4991846407 is about 70652.9999858463. Note that the first 4 decimals coincide. The cubic root of 4991846407 is about 1709.0459444421.

The spelling of 4991846407 in words is "four billion, nine hundred ninety-one million, eight hundred forty-six thousand, four hundred seven".