4894641979 has 2 divisors, whose sum is σ = 4894641980. Its totient is φ = 4894641978.

The previous prime is 4894641971. The next prime is 4894641991. The reversal of 4894641979 is 9791464984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4894641979 - 2³ = 4894641971 is a prime.

It is not a weakly prime, because it can be changed into another prime (4894641971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2447320989 + 2447320990.

It is an arithmetic number, because the mean of its divisors is an integer number (2447320990).

Almost surely, 2^4894641979 is an apocalyptic number.

4894641979 is a deficient number, since it is larger than the sum of its proper divisors (1).

4894641979 is an equidigital number, since it uses as much as digits as its factorization.

4894641979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 61.

The square root of 4894641979 is about 69961.7179534637. The cubic root of 4894641979 is about 1697.8799383802.

The spelling of 4894641979 in words is "four billion, eight hundred ninety-four million, six hundred forty-one thousand, nine hundred seventy-nine".