77743423 has 2 divisors, whose sum is σ = 77743424. Its totient is φ = 77743422.

The previous prime is 77743411. The next prime is 77743429. The reversal of 77743423 is 32434777.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77743423 - 2⁹ = 77742911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77743429) 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, 38871711 + 38871712.

It is an arithmetic number, because the mean of its divisors is an integer number (38871712).

Almost surely, 2^77743423 is an apocalyptic number.

77743423 is a deficient number, since it is larger than the sum of its proper divisors (1).

77743423 is an equidigital number, since it uses as much as digits as its factorization.

77743423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 37.

The square root of 77743423 is about 8817.2230889323. The cubic root of 77743423 is about 426.7968638172.

The spelling of 77743423 in words is "seventy-seven million, seven hundred forty-three thousand, four hundred twenty-three".