7876338421 has 4 divisors (see below), whose sum is σ = 9001529632. Its totient is φ = 6751147212.

The previous prime is 7876338409. The next prime is 7876338461. The reversal of 7876338421 is 1248336787.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 7876338421 - 2⁵ = 7876338389 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 (7876338461) 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, 562595595 + ... + 562595608.

It is an arithmetic number, because the mean of its divisors is an integer number (2250382408).

Almost surely, 2^7876338421 is an apocalyptic number.

It is an amenable number.

7876338421 is a deficient number, since it is larger than the sum of its proper divisors (1125191211).

7876338421 is a wasteful number, since it uses less digits than its factorization.

7876338421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125191210.

The product of its digits is 1354752, while the sum is 49.

The square root of 7876338421 is about 88748.7375741199. The cubic root of 7876338421 is about 1989.6413098115.

The spelling of 7876338421 in words is "seven billion, eight hundred seventy-six million, three hundred thirty-eight thousand, four hundred twenty-one".