4979749949 has 2 divisors, whose sum is σ = 4979749950. Its totient is φ = 4979749948.

The previous prime is 4979749937. The next prime is 4979749979. The reversal of 4979749949 is 9499479794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4137705625 + 842044324 = 64325^2 + 29018^2 .

It is a cyclic number.

It is not a de Polignac number, because 4979749949 - 2²⁴ = 4962972733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4979749979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489874974 + 2489874975.

It is an arithmetic number, because the mean of its divisors is an integer number (2489874975).

Almost surely, 2^4979749949 is an apocalyptic number.

It is an amenable number.

4979749949 is a deficient number, since it is larger than the sum of its proper divisors (1).

4979749949 is an equidigital number, since it uses as much as digits as its factorization.

4979749949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185177664, while the sum is 71.

The square root of 4979749949 is about 70567.3433607926. The cubic root of 4979749949 is about 1707.6643498569.

The spelling of 4979749949 in words is "four billion, nine hundred seventy-nine million, seven hundred forty-nine thousand, nine hundred forty-nine".