7848834421 has 4 divisors (see below), whose sum is σ = 7888276000. Its totient is φ = 7809392844.

The previous prime is 7848834407. The next prime is 7848834491. The reversal of 7848834421 is 1244388487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1244388487 = 79 ⋅15751753.

It is a cyclic number.

It is not a de Polignac number, because 7848834421 - 2¹⁹ = 7848310133 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 (7848834491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19720491 + ... + 19720888.

It is an arithmetic number, because the mean of its divisors is an integer number (1972069000).

Almost surely, 2^7848834421 is an apocalyptic number.

It is an amenable number.

7848834421 is a deficient number, since it is larger than the sum of its proper divisors (39441579).

7848834421 is a wasteful number, since it uses less digits than its factorization.

7848834421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39441578.

The product of its digits is 1376256, while the sum is 49.

The square root of 7848834421 is about 88593.6477463255. The cubic root of 7848834421 is about 1987.3226809937.

The spelling of 7848834421 in words is "seven billion, eight hundred forty-eight million, eight hundred thirty-four thousand, four hundred twenty-one".