76923709 has 2 divisors, whose sum is σ = 76923710. Its totient is φ = 76923708.

The previous prime is 76923701. The next prime is 76923713. The reversal of 76923709 is 90732967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56475225 + 20448484 = 7515^2 + 4522^2 .

It is a cyclic number.

It is not a de Polignac number, because 76923709 - 2³ = 76923701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76923701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38461854 + 38461855.

It is an arithmetic number, because the mean of its divisors is an integer number (38461855).

Almost surely, 2^76923709 is an apocalyptic number.

It is an amenable number.

76923709 is a deficient number, since it is larger than the sum of its proper divisors (1).

76923709 is an equidigital number, since it uses as much as digits as its factorization.

76923709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 76923709 is about 8770.6162269250. The cubic root of 76923709 is about 425.2915351501.

The spelling of 76923709 in words is "seventy-six million, nine hundred twenty-three thousand, seven hundred nine".