4921238977 has 4 divisors (see below), whose sum is σ = 4926469716. Its totient is φ = 4916008240.

The previous prime is 4921238969. The next prime is 4921238981. The reversal of 4921238977 is 7798321294.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3032815041 + 1888423936 = 55071^2 + 43456^2 .

It is a cyclic number.

It is not a de Polignac number, because 4921238977 - 2³ = 4921238969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4921238177) 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, 2613958 + ... + 2615839.

It is an arithmetic number, because the mean of its divisors is an integer number (1231617429).

Almost surely, 2^4921238977 is an apocalyptic number.

It is an amenable number.

4921238977 is a deficient number, since it is larger than the sum of its proper divisors (5230739).

4921238977 is an equidigital number, since it uses as much as digits as its factorization.

4921238977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230738.

The product of its digits is 1524096, while the sum is 52.

The square root of 4921238977 is about 70151.5429409789. The cubic root of 4921238977 is about 1700.9497549904.

The spelling of 4921238977 in words is "four billion, nine hundred twenty-one million, two hundred thirty-eight thousand, nine hundred seventy-seven".