4497872421 has 16 divisors (see below), whose sum is σ = 7090243200. Its totient is φ = 2481584448.

The previous prime is 4497872419. The next prime is 4497872501. The reversal of 4497872421 is 1242787944.

It is not a de Polignac number, because 4497872421 - 2¹ = 4497872419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4497872221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3692226 + ... + 3693443.

It is an arithmetic number, because the mean of its divisors is an integer number (443140200).

Almost surely, 2^4497872421 is an apocalyptic number.

It is an amenable number.

4497872421 is a deficient number, since it is larger than the sum of its proper divisors (2592370779).

4497872421 is a wasteful number, since it uses less digits than its factorization.

4497872421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7385708.

The product of its digits is 903168, while the sum is 48.

The square root of 4497872421 is about 67066.1794125772. The cubic root of 4497872421 is about 1650.7033941321.

The spelling of 4497872421 in words is "four billion, four hundred ninety-seven million, eight hundred seventy-two thousand, four hundred twenty-one".