76888397 has 2 divisors, whose sum is σ = 76888398. Its totient is φ = 76888396.

The previous prime is 76888363. The next prime is 76888403. The reversal of 76888397 is 79388867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76545001 + 343396 = 8749^2 + 586^2 .

It is an emirp because it is prime and its reverse (79388867) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76888397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76888327) 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, 38444198 + 38444199.

It is an arithmetic number, because the mean of its divisors is an integer number (38444199).

Almost surely, 2^76888397 is an apocalyptic number.

It is an amenable number.

76888397 is a deficient number, since it is larger than the sum of its proper divisors (1).

76888397 is an equidigital number, since it uses as much as digits as its factorization.

76888397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 56.

The square root of 76888397 is about 8768.6029103843. The cubic root of 76888397 is about 425.2264481808.

The spelling of 76888397 in words is "seventy-six million, eight hundred eighty-eight thousand, three hundred ninety-seven".