4939227521 has 4 divisors (see below), whose sum is σ = 4939411200. Its totient is φ = 4939043844.

The previous prime is 4939227511. The next prime is 4939227533. The reversal of 4939227521 is 1257229394.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1257229394 = 2 ⋅628614697.

It is a cyclic number.

It is not a de Polignac number, because 4939227521 - 2²² = 4935033217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4939227511) 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, 42761 + ... + 108198.

It is an arithmetic number, because the mean of its divisors is an integer number (1234852800).

Almost surely, 2^4939227521 is an apocalyptic number.

It is an amenable number.

4939227521 is a deficient number, since it is larger than the sum of its proper divisors (183679).

4939227521 is a wasteful number, since it uses less digits than its factorization.

4939227521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183678.

The product of its digits is 272160, while the sum is 44.

The square root of 4939227521 is about 70279.6380255334. The cubic root of 4939227521 is about 1703.0197217985.

The spelling of 4939227521 in words is "four billion, nine hundred thirty-nine million, two hundred twenty-seven thousand, five hundred twenty-one".