2421897849 has 12 divisors (see below), whose sum is σ = 3998053696. Its totient is φ = 1383941592.

The previous prime is 2421897811. The next prime is 2421897889. The reversal of 2421897849 is 9487981242.

2421897849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2421897849 - 2⁷ = 2421897721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2421897795 and 2421897804.

It is not an unprimeable number, because it can be changed into a prime (2421897889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19221349 + ... + 19221474.

Almost surely, 2^2421897849 is an apocalyptic number.

It is an amenable number.

2421897849 is a deficient number, since it is larger than the sum of its proper divisors (1576155847).

2421897849 is a wasteful number, since it uses less digits than its factorization.

2421897849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38442836 (or 38442833 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 2421897849 is about 49212.7813580984. The cubic root of 2421897849 is about 1342.9255619535.

The spelling of 2421897849 in words is "two billion, four hundred twenty-one million, eight hundred ninety-seven thousand, eight hundred forty-nine".