86381069 has 2 divisors, whose sum is σ = 86381070. Its totient is φ = 86381068.

The previous prime is 86381047. The next prime is 86381081. The reversal of 86381069 is 96018368.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70778569 + 15602500 = 8413^2 + 3950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86381069 is a prime.

It is a super-2 number, since 2×86381069² = 14923378163165522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86381039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43190534 + 43190535.

It is an arithmetic number, because the mean of its divisors is an integer number (43190535).

Almost surely, 2^86381069 is an apocalyptic number.

It is an amenable number.

86381069 is a deficient number, since it is larger than the sum of its proper divisors (1).

86381069 is an equidigital number, since it uses as much as digits as its factorization.

86381069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 86381069 is about 9294.1416494478. The cubic root of 86381069 is about 442.0514893301.

The spelling of 86381069 in words is "eighty-six million, three hundred eighty-one thousand, sixty-nine".