4591928421 has 16 divisors (see below), whose sum is σ = 6806310400. Its totient is φ = 3059731584.

The previous prime is 4591928399. The next prime is 4591928431. The reversal of 4591928421 is 1248291954.

It is a happy number.

4591928421 is a `hidden beast` number, since 459 + 192 + 8 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 4591928421 - 2¹⁰ = 4591927397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4591928431) 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, 12300 + ... + 96618.

It is an arithmetic number, because the mean of its divisors is an integer number (425394400).

Almost surely, 2^4591928421 is an apocalyptic number.

It is an amenable number.

4591928421 is a deficient number, since it is larger than the sum of its proper divisors (2214381979).

4591928421 is a wasteful number, since it uses less digits than its factorization.

4591928421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86345 (or 86339 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 4591928421 is about 67763.7692354845. The cubic root of 4591928421 is about 1662.1301850349.

The spelling of 4591928421 in words is "four billion, five hundred ninety-one million, nine hundred twenty-eight thousand, four hundred twenty-one".