4993779971 has 4 divisors (see below), whose sum is σ = 5287531752. Its totient is φ = 4700028192.

The previous prime is 4993779953. The next prime is 4993779977. The reversal of 4993779971 is 1799773994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1799773994 = 2 ⋅899886997.

It is a cyclic number.

It is not a de Polignac number, because 4993779971 - 2¹⁴ = 4993763587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4993779898 and 4993779907.

It is not an unprimeable number, because it can be changed into a prime (4993779977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146875865 + ... + 146875898.

It is an arithmetic number, because the mean of its divisors is an integer number (1321882938).

Almost surely, 2^4993779971 is an apocalyptic number.

4993779971 is a deficient number, since it is larger than the sum of its proper divisors (293751781).

4993779971 is a wasteful number, since it uses less digits than its factorization.

4993779971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293751780.

The product of its digits is 27005076, while the sum is 65.

The square root of 4993779971 is about 70666.6821847467. The cubic root of 4993779971 is about 1709.2665791110.

The spelling of 4993779971 in words is "four billion, nine hundred ninety-three million, seven hundred seventy-nine thousand, nine hundred seventy-one".