8639461 has 2 divisors, whose sum is σ = 8639462. Its totient is φ = 8639460.

The previous prime is 8639459. The next prime is 8639507. The reversal of 8639461 is 1649368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8122500 + 516961 = 2850^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 8639461 - 2¹ = 8639459 is a prime.

Together with 8639459, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8639461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8639401) 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 as a sum of consecutive naturals, namely, 4319730 + 4319731.

It is an arithmetic number, because the mean of its divisors is an integer number (4319731).

Almost surely, 2^8639461 is an apocalyptic number.

It is an amenable number.

8639461 is a deficient number, since it is larger than the sum of its proper divisors (1).

8639461 is an equidigital number, since it uses as much as digits as its factorization.

8639461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 8639461 is about 2939.2960041479. The cubic root of 8639461 is about 205.1928464892.

The spelling of 8639461 in words is "eight million, six hundred thirty-nine thousand, four hundred sixty-one".