3854421493 has 18 divisors (see below), whose sum is σ = 4230253986. Its totient is φ = 3491186688.

The previous prime is 3854421481. The next prime is 3854421497. The reversal of 3854421493 is 3941244583.

It can be written as a sum of positive squares in 3 ways, for example, as 2205899089 + 1648522404 = 46967^2 + 40602^2 .

It is not a de Polignac number, because 3854421493 - 2²¹ = 3852324341 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 (3854421497) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14997621 + ... + 14997877.

Almost surely, 2^3854421493 is an apocalyptic number.

It is an amenable number.

3854421493 is a deficient number, since it is larger than the sum of its proper divisors (375832493).

3854421493 is an frugal number, since it uses more digits than its factorization.

3854421493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 337 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 3854421493 is about 62083.9874122144. The cubic root of 3854421493 is about 1567.9049628999.

The spelling of 3854421493 in words is "three billion, eight hundred fifty-four million, four hundred twenty-one thousand, four hundred ninety-three".