86977783 has 2 divisors, whose sum is σ = 86977784. Its totient is φ = 86977782.

The previous prime is 86977733. The next prime is 86977817. The reversal of 86977783 is 38777968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86977783 - 2⁹ = 86977271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86977703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43488891 + 43488892.

It is an arithmetic number, because the mean of its divisors is an integer number (43488892).

Almost surely, 2^86977783 is an apocalyptic number.

86977783 is a deficient number, since it is larger than the sum of its proper divisors (1).

86977783 is an equidigital number, since it uses as much as digits as its factorization.

86977783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 55.

The square root of 86977783 is about 9326.1880208368. The cubic root of 86977783 is about 443.0670407264.

The spelling of 86977783 in words is "eighty-six million, nine hundred seventy-seven thousand, seven hundred eighty-three".