7879851 has 48 divisors (see below), whose sum is σ = 14227200. Its totient is φ = 4100544.

The previous prime is 7879849. The next prime is 7879871. The reversal of 7879851 is 1589787.

It is not a de Polignac number, because 7879851 - 2¹ = 7879849 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (141120) is a multiple of the sum of its prime factors (288).

It is a junction number, because it is equal to n+sod(n) for n = 7879797 and 7879806.

It is not an unprimeable number, because it can be changed into a prime (7879841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34600 + ... + 34826.

It is an arithmetic number, because the mean of its divisors is an integer number (296400).

Almost surely, 2^7879851 is an apocalyptic number.

7879851 is a deficient number, since it is larger than the sum of its proper divisors (6347349).

7879851 is a wasteful number, since it uses less digits than its factorization.

7879851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 285 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The square root of 7879851 is about 2807.1072298721. The cubic root of 7879851 is about 198.9937036635.

Subtracting from 7879851 its reverse (1589787), we obtain a square (6290064 = 2508²).

The spelling of 7879851 in words is "seven million, eight hundred seventy-nine thousand, eight hundred fifty-one".