77041249 has 2 divisors, whose sum is σ = 77041250. Its totient is φ = 77041248.

The previous prime is 77041247. The next prime is 77041259. The reversal of 77041249 is 94214077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55353600 + 21687649 = 7440^2 + 4657^2 .

It is an emirp because it is prime and its reverse (94214077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77041249 - 2¹ = 77041247 is a prime.

Together with 77041247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (77041247) 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, 38520624 + 38520625.

It is an arithmetic number, because the mean of its divisors is an integer number (38520625).

Almost surely, 2^77041249 is an apocalyptic number.

It is an amenable number.

77041249 is a deficient number, since it is larger than the sum of its proper divisors (1).

77041249 is an equidigital number, since it uses as much as digits as its factorization.

77041249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 77041249 is about 8777.3144526102. The cubic root of 77041249 is about 425.5080411239.

The spelling of 77041249 in words is "seventy-seven million, forty-one thousand, two hundred forty-nine".