84748777 has 2 divisors, whose sum is σ = 84748778. Its totient is φ = 84748776.

The previous prime is 84748739. The next prime is 84748787. The reversal of 84748777 is 77784748.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61168041 + 23580736 = 7821^2 + 4856^2 .

It is a cyclic number.

It is not a de Polignac number, because 84748777 - 2⁷ = 84748649 is a prime.

It is not a weakly prime, because it can be changed into another prime (84748787) 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, 42374388 + 42374389.

It is an arithmetic number, because the mean of its divisors is an integer number (42374389).

Almost surely, 2^84748777 is an apocalyptic number.

It is an amenable number.

84748777 is a deficient number, since it is larger than the sum of its proper divisors (1).

84748777 is an equidigital number, since it uses as much as digits as its factorization.

84748777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2458624, while the sum is 52.

The square root of 84748777 is about 9205.9098952792. The cubic root of 84748777 is about 439.2493692727.

The spelling of 84748777 in words is "eighty-four million, seven hundred forty-eight thousand, seven hundred seventy-seven".