76232309 has 2 divisors, whose sum is σ = 76232310. Its totient is φ = 76232308.

The previous prime is 76232297. The next prime is 76232347. The reversal of 76232309 is 90323267.

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., 55502500 + 20729809 = 7450^2 + 4553^2 .

It is a cyclic number.

It is not a de Polignac number, because 76232309 - 2⁴ = 76232293 is a prime.

It is a super-2 number, since 2×76232309² = 11622729870942962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76232809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38116154 + 38116155.

It is an arithmetic number, because the mean of its divisors is an integer number (38116155).

Almost surely, 2^76232309 is an apocalyptic number.

It is an amenable number.

76232309 is a deficient number, since it is larger than the sum of its proper divisors (1).

76232309 is an equidigital number, since it uses as much as digits as its factorization.

76232309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 76232309 is about 8731.1115558101. Note that the first 3 decimals coincide. The cubic root of 76232309 is about 424.0135071198.

The spelling of 76232309 in words is "seventy-six million, two hundred thirty-two thousand, three hundred nine".