4992471021 has 16 divisors (see below), whose sum is σ = 6679618560. Its totient is φ = 3316837440.

The previous prime is 4992470993. The next prime is 4992471023. The reversal of 4992471021 is 1201742994.

It is not a de Polignac number, because 4992471021 - 2⁶ = 4992470957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4992471023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1732660 + ... + 1735538.

It is an arithmetic number, because the mean of its divisors is an integer number (417476160).

Almost surely, 2^4992471021 is an apocalyptic number.

It is an amenable number.

4992471021 is a deficient number, since it is larger than the sum of its proper divisors (1687147539).

4992471021 is a wasteful number, since it uses less digits than its factorization.

4992471021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 4992471021 is about 70657.4201411288. The cubic root of 4992471021 is about 1709.1172239791.

The spelling of 4992471021 in words is "four billion, nine hundred ninety-two million, four hundred seventy-one thousand, twenty-one".