76909793 has 2 divisors, whose sum is σ = 76909794. Its totient is φ = 76909792.

The previous prime is 76909787. The next prime is 76909817. The reversal of 76909793 is 39790967.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51437584 + 25472209 = 7172^2 + 5047^2 .

It is a cyclic number.

It is not a de Polignac number, because 76909793 - 2²⁰ = 75861217 is a prime.

It is not a weakly prime, because it can be changed into another prime (76909753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38454896 + 38454897.

It is an arithmetic number, because the mean of its divisors is an integer number (38454897).

Almost surely, 2^76909793 is an apocalyptic number.

It is an amenable number.

76909793 is a deficient number, since it is larger than the sum of its proper divisors (1).

76909793 is an equidigital number, since it uses as much as digits as its factorization.

76909793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 642978, while the sum is 50.

The square root of 76909793 is about 8769.8228602407. The cubic root of 76909793 is about 425.2658876005.

The spelling of 76909793 in words is "seventy-six million, nine hundred nine thousand, seven hundred ninety-three".