86138783 has 2 divisors, whose sum is σ = 86138784. Its totient is φ = 86138782.

The previous prime is 86138719. The next prime is 86138791. The reversal of 86138783 is 38783168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86138783 - 2⁶ = 86138719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86138713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43069391 + 43069392.

It is an arithmetic number, because the mean of its divisors is an integer number (43069392).

Almost surely, 2^86138783 is an apocalyptic number.

86138783 is a deficient number, since it is larger than the sum of its proper divisors (1).

86138783 is an equidigital number, since it uses as much as digits as its factorization.

86138783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 86138783 is about 9281.0981570071. The cubic root of 86138783 is about 441.6378061756.

The spelling of 86138783 in words is "eighty-six million, one hundred thirty-eight thousand, seven hundred eighty-three".