76312909 has 2 divisors, whose sum is σ = 76312910. Its totient is φ = 76312908.

The previous prime is 76312897. The next prime is 76312921. The reversal of 76312909 is 90921367.

It is a balanced prime because it is at equal distance from previous prime (76312897) and next prime (76312921).

It can be written as a sum of positive squares in only one way, i.e., 74338884 + 1974025 = 8622^2 + 1405^2 .

It is an emirp because it is prime and its reverse (90921367) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76312909 - 2⁵ = 76312877 is a prime.

It is a super-3 number, since 3×76312909³ (a number of 25 digits) contains 333 as substring.

It is equal to p_4466773 and since 76312909 and 4466773 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76312969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38156454 + 38156455.

It is an arithmetic number, because the mean of its divisors is an integer number (38156455).

Almost surely, 2^76312909 is an apocalyptic number.

It is an amenable number.

76312909 is a deficient number, since it is larger than the sum of its proper divisors (1).

76312909 is an equidigital number, since it uses as much as digits as its factorization.

76312909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 76312909 is about 8735.7260144764. The cubic root of 76312909 is about 424.1628901993.

The spelling of 76312909 in words is "seventy-six million, three hundred twelve thousand, nine hundred nine".