76540939 has 2 divisors, whose sum is σ = 76540940. Its totient is φ = 76540938.

The previous prime is 76540927. The next prime is 76540993. The reversal of 76540939 is 93904567.

Together with next prime (76540993) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76540939 - 2⁵ = 76540907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76540895 and 76540904.

It is not a weakly prime, because it can be changed into another prime (76540339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38270469 + 38270470.

It is an arithmetic number, because the mean of its divisors is an integer number (38270470).

Almost surely, 2^76540939 is an apocalyptic number.

76540939 is a deficient number, since it is larger than the sum of its proper divisors (1).

76540939 is an equidigital number, since it uses as much as digits as its factorization.

76540939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 76540939 is about 8748.7678561041. The cubic root of 76540939 is about 424.5849493537.

The spelling of 76540939 in words is "seventy-six million, five hundred forty thousand, nine hundred thirty-nine".