84754909 has 2 divisors, whose sum is σ = 84754910. Its totient is φ = 84754908.

The previous prime is 84754903. The next prime is 84754927. The reversal of 84754909 is 90945748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52606009 + 32148900 = 7253^2 + 5670^2 .

It is a cyclic number.

It is not a de Polignac number, because 84754909 - 2⁷ = 84754781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84754903) 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, 42377454 + 42377455.

It is an arithmetic number, because the mean of its divisors is an integer number (42377455).

Almost surely, 2^84754909 is an apocalyptic number.

It is an amenable number.

84754909 is a deficient number, since it is larger than the sum of its proper divisors (1).

84754909 is an equidigital number, since it uses as much as digits as its factorization.

84754909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 84754909 is about 9206.2429361819. The cubic root of 84754909 is about 439.2599629838.

The spelling of 84754909 in words is "eighty-four million, seven hundred fifty-four thousand, nine hundred nine".