7842879 has 16 divisors (see below), whose sum is σ = 12675840. Its totient is φ = 4753080.

The previous prime is 7842871. The next prime is 7842881. The reversal of 7842879 is 9782487.

It is not a de Polignac number, because 7842879 - 2³ = 7842871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7842871) 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, 12907 + ... + 13500.

It is an arithmetic number, because the mean of its divisors is an integer number (792240).

Almost surely, 2^7842879 is an apocalyptic number.

7842879 is a deficient number, since it is larger than the sum of its proper divisors (4832961).

7842879 is a wasteful number, since it uses less digits than its factorization.

7842879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26427 (or 26421 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 7842879 is about 2800.5140599540. The cubic root of 7842879 is about 198.6819916835.

It can be divided in two parts, 784 and 2879, that added together give a palindrome (3663).

The spelling of 7842879 in words is "seven million, eight hundred forty-two thousand, eight hundred seventy-nine".