84577841 has 2 divisors, whose sum is σ = 84577842. Its totient is φ = 84577840.

The previous prime is 84577783. The next prime is 84577853. The reversal of 84577841 is 14877548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52417600 + 32160241 = 7240^2 + 5671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84577841 is a prime.

It is a super-2 number, since 2×84577841² = 14306822376442562, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84577792 and 84577801.

It is not a weakly prime, because it can be changed into another prime (84577541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42288920 + 42288921.

It is an arithmetic number, because the mean of its divisors is an integer number (42288921).

Almost surely, 2^84577841 is an apocalyptic number.

It is an amenable number.

84577841 is a deficient number, since it is larger than the sum of its proper divisors (1).

84577841 is an equidigital number, since it uses as much as digits as its factorization.

84577841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250880, while the sum is 44.

The square root of 84577841 is about 9196.6211730178. The cubic root of 84577841 is about 438.9538524524.

The spelling of 84577841 in words is "eighty-four million, five hundred seventy-seven thousand, eight hundred forty-one".