77893069 has 2 divisors, whose sum is σ = 77893070. Its totient is φ = 77893068.

The previous prime is 77893051. The next prime is 77893091. The reversal of 77893069 is 96039877.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53509225 + 24383844 = 7315^2 + 4938^2 .

It is a cyclic number.

It is not a de Polignac number, because 77893069 - 2⁹ = 77892557 is a prime.

It is a super-2 number, since 2×77893069² = 12134660396477522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77893469) 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, 38946534 + 38946535.

It is an arithmetic number, because the mean of its divisors is an integer number (38946535).

Almost surely, 2^77893069 is an apocalyptic number.

It is an amenable number.

77893069 is a deficient number, since it is larger than the sum of its proper divisors (1).

77893069 is an equidigital number, since it uses as much as digits as its factorization.

77893069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 77893069 is about 8825.7050143317. The cubic root of 77893069 is about 427.0705311591.

The spelling of 77893069 in words is "seventy-seven million, eight hundred ninety-three thousand, sixty-nine".