77238373 has 2 divisors, whose sum is σ = 77238374. Its totient is φ = 77238372.

The previous prime is 77238367. The next prime is 77238377. The reversal of 77238373 is 37383277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59243809 + 17994564 = 7697^2 + 4242^2 .

It is an emirp because it is prime and its reverse (37383277) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77238373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77238377) 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, 38619186 + 38619187.

It is an arithmetic number, because the mean of its divisors is an integer number (38619187).

Almost surely, 2^77238373 is an apocalyptic number.

It is an amenable number.

77238373 is a deficient number, since it is larger than the sum of its proper divisors (1).

77238373 is an equidigital number, since it uses as much as digits as its factorization.

77238373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 40.

The square root of 77238373 is about 8788.5364538130. The cubic root of 77238373 is about 425.8706451869.

The spelling of 77238373 in words is "seventy-seven million, two hundred thirty-eight thousand, three hundred seventy-three".