77741249 has 2 divisors, whose sum is σ = 77741250. Its totient is φ = 77741248.

The previous prime is 77741227. The next prime is 77741263. The reversal of 77741249 is 94214777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74995600 + 2745649 = 8660^2 + 1657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77741249 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 (77741849) 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, 38870624 + 38870625.

It is an arithmetic number, because the mean of its divisors is an integer number (38870625).

Almost surely, 2^77741249 is an apocalyptic number.

It is an amenable number.

77741249 is a deficient number, since it is larger than the sum of its proper divisors (1).

77741249 is an equidigital number, since it uses as much as digits as its factorization.

77741249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 41.

The square root of 77741249 is about 8817.0998066258. The cubic root of 77741249 is about 426.7928854956.

The spelling of 77741249 in words is "seventy-seven million, seven hundred forty-one thousand, two hundred forty-nine".