76539893 has 2 divisors, whose sum is σ = 76539894. Its totient is φ = 76539892.

The previous prime is 76539839. The next prime is 76539901. The reversal of 76539893 is 39893567.

Together with previous prime (76539839) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51868804 + 24671089 = 7202^2 + 4967^2 .

It is a cyclic number.

It is not a de Polignac number, because 76539893 - 2⁸ = 76539637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76539833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38269946 + 38269947.

It is an arithmetic number, because the mean of its divisors is an integer number (38269947).

Almost surely, 2^76539893 is an apocalyptic number.

It is an amenable number.

76539893 is a deficient number, since it is larger than the sum of its proper divisors (1).

76539893 is an equidigital number, since it uses as much as digits as its factorization.

76539893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The square root of 76539893 is about 8748.7080760533. The cubic root of 76539893 is about 424.5830152346.

The spelling of 76539893 in words is "seventy-six million, five hundred thirty-nine thousand, eight hundred ninety-three".