8479013861 has 2 divisors, whose sum is σ = 8479013862. Its totient is φ = 8479013860.

The previous prime is 8479013849. The next prime is 8479013911. The reversal of 8479013861 is 1683109748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8451124900 + 27888961 = 91930^2 + 5281^2 .

It is a cyclic number.

It is not a de Polignac number, because 8479013861 - 2¹⁴ = 8478997477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8479013821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4239506930 + 4239506931.

It is an arithmetic number, because the mean of its divisors is an integer number (4239506931).

Almost surely, 2^8479013861 is an apocalyptic number.

It is an amenable number.

8479013861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8479013861 is an equidigital number, since it uses as much as digits as its factorization.

8479013861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 8479013861 is about 92081.5609174823. The cubic root of 8479013861 is about 2039.1465946127.

The spelling of 8479013861 in words is "eight billion, four hundred seventy-nine million, thirteen thousand, eight hundred sixty-one".