77329493 has 2 divisors, whose sum is σ = 77329494. Its totient is φ = 77329492.

The previous prime is 77329477. The next prime is 77329507. The reversal of 77329493 is 39492377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77035729 + 293764 = 8777^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 77329493 - 2⁴ = 77329477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77329423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38664746 + 38664747.

It is an arithmetic number, because the mean of its divisors is an integer number (38664747).

Almost surely, 2^77329493 is an apocalyptic number.

It is an amenable number.

77329493 is a deficient number, since it is larger than the sum of its proper divisors (1).

77329493 is an equidigital number, since it uses as much as digits as its factorization.

77329493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 44.

The square root of 77329493 is about 8793.7189516154. The cubic root of 77329493 is about 426.0380493834.

The spelling of 77329493 in words is "seventy-seven million, three hundred twenty-nine thousand, four hundred ninety-three".