4977916639 has 2 divisors, whose sum is σ = 4977916640. Its totient is φ = 4977916638.

The previous prime is 4977916589. The next prime is 4977916649. The reversal of 4977916639 is 9366197794.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4977916639 - 2¹⁵ = 4977883871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4977916649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2488958319 + 2488958320.

It is an arithmetic number, because the mean of its divisors is an integer number (2488958320).

Almost surely, 2^4977916639 is an apocalyptic number.

4977916639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4977916639 is an equidigital number, since it uses as much as digits as its factorization.

4977916639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15431472, while the sum is 61.

The square root of 4977916639 is about 70554.3523746055. The cubic root of 4977916639 is about 1707.4547635370.

The spelling of 4977916639 in words is "four billion, nine hundred seventy-seven million, nine hundred sixteen thousand, six hundred thirty-nine".