76383421 has 2 divisors, whose sum is σ = 76383422. Its totient is φ = 76383420.

The previous prime is 76383379. The next prime is 76383443. The reversal of 76383421 is 12438367.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73788100 + 2595321 = 8590^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 76383421 - 2⁹ = 76382909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76383491) 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, 38191710 + 38191711.

It is an arithmetic number, because the mean of its divisors is an integer number (38191711).

Almost surely, 2^76383421 is an apocalyptic number.

It is an amenable number.

76383421 is a deficient number, since it is larger than the sum of its proper divisors (1).

76383421 is an equidigital number, since it uses as much as digits as its factorization.

76383421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 76383421 is about 8739.7609235036. The cubic root of 76383421 is about 424.2934900639.

The spelling of 76383421 in words is "seventy-six million, three hundred eighty-three thousand, four hundred twenty-one".