7840220479 has 16 divisors (see below), whose sum is σ = 9652184640. Its totient is φ = 6201527040.

The previous prime is 7840220471. The next prime is 7840220501. The reversal of 7840220479 is 9740220487.

7840220479 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 7840220479 - 2³ = 7840220471 is a prime.

It is a super-2 number, since 2×7840220479² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7840220471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391449 + ... + 410989.

It is an arithmetic number, because the mean of its divisors is an integer number (603261540).

Almost surely, 2^7840220479 is an apocalyptic number.

7840220479 is a deficient number, since it is larger than the sum of its proper divisors (1811964161).

7840220479 is a wasteful number, since it uses less digits than its factorization.

7840220479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23970.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 7840220479 is about 88545.0195042048. The cubic root of 7840220479 is about 1986.5953989675.

The spelling of 7840220479 in words is "seven billion, eight hundred forty million, two hundred twenty thousand, four hundred seventy-nine".