4987979 has 2 divisors, whose sum is σ = 4987980. Its totient is φ = 4987978.

The previous prime is 4987973. The next prime is 4987999. The reversal of 4987979 is 9797894.

4987979 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4987979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4987979.

It is not a weakly prime, because it can be changed into another prime (4987973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493989 + 2493990.

It is an arithmetic number, because the mean of its divisors is an integer number (2493990).

Almost surely, 2^4987979 is an apocalyptic number.

4987979 is a deficient number, since it is larger than the sum of its proper divisors (1).

4987979 is an equidigital number, since it uses as much as digits as its factorization.

4987979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 53.

The square root of 4987979 is about 2233.3783826302. The cubic root of 4987979 is about 170.8604472266.

The spelling of 4987979 in words is "four million, nine hundred eighty-seven thousand, nine hundred seventy-nine".