84486641 has 2 divisors, whose sum is σ = 84486642. Its totient is φ = 84486640.

The previous prime is 84486631. The next prime is 84486653. The reversal of 84486641 is 14668448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67305616 + 17181025 = 8204^2 + 4145^2 .

It is a cyclic number.

It is not a de Polignac number, because 84486641 - 2²² = 80292337 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (84486631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42243320 + 42243321.

It is an arithmetic number, because the mean of its divisors is an integer number (42243321).

Almost surely, 2^84486641 is an apocalyptic number.

It is an amenable number.

84486641 is a deficient number, since it is larger than the sum of its proper divisors (1).

84486641 is an equidigital number, since it uses as much as digits as its factorization.

84486641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 41.

The square root of 84486641 is about 9191.6614928967. The cubic root of 84486641 is about 438.7960215576.

The spelling of 84486641 in words is "eighty-four million, four hundred eighty-six thousand, six hundred forty-one".