84689741 has 2 divisors, whose sum is σ = 84689742. Its totient is φ = 84689740.

The previous prime is 84689713. The next prime is 84689743. The reversal of 84689741 is 14798648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80174116 + 4515625 = 8954^2 + 2125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84689741 is a prime.

Together with 84689743, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84689743) 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, 42344870 + 42344871.

It is an arithmetic number, because the mean of its divisors is an integer number (42344871).

Almost surely, 2^84689741 is an apocalyptic number.

It is an amenable number.

84689741 is a deficient number, since it is larger than the sum of its proper divisors (1).

84689741 is an equidigital number, since it uses as much as digits as its factorization.

84689741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 47.

The square root of 84689741 is about 9202.7029181649. The cubic root of 84689741 is about 439.1473518737.

The spelling of 84689741 in words is "eighty-four million, six hundred eighty-nine thousand, seven hundred forty-one".