76455989 has 2 divisors, whose sum is σ = 76455990. Its totient is φ = 76455988.

The previous prime is 76455971. The next prime is 76456007. The reversal of 76455989 is 98955467.

It is a balanced prime because it is at equal distance from previous prime (76455971) and next prime (76456007).

It can be written as a sum of positive squares in only one way, i.e., 73393489 + 3062500 = 8567^2 + 1750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76455989 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76455989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76455959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38227994 + 38227995.

It is an arithmetic number, because the mean of its divisors is an integer number (38227995).

Almost surely, 2^76455989 is an apocalyptic number.

It is an amenable number.

76455989 is a deficient number, since it is larger than the sum of its proper divisors (1).

76455989 is an equidigital number, since it uses as much as digits as its factorization.

76455989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 53.

The square root of 76455989 is about 8743.9115388938. The cubic root of 76455989 is about 424.4278140835.

The spelling of 76455989 in words is "seventy-six million, four hundred fifty-five thousand, nine hundred eighty-nine".