86049569 has 2 divisors, whose sum is σ = 86049570. Its totient is φ = 86049568.

The previous prime is 86049559. The next prime is 86049619. The reversal of 86049569 is 96594068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67240000 + 18809569 = 8200^2 + 4337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86049569 is a prime.

It is a super-2 number, since 2×86049569² = 14809056650171522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (86049559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43024784 + 43024785.

It is an arithmetic number, because the mean of its divisors is an integer number (43024785).

Almost surely, 2^86049569 is an apocalyptic number.

It is an amenable number.

86049569 is a deficient number, since it is larger than the sum of its proper divisors (1).

86049569 is an equidigital number, since it uses as much as digits as its factorization.

86049569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 86049569 is about 9276.2906918660. The cubic root of 86049569 is about 441.4852853094.

The spelling of 86049569 in words is "eighty-six million, forty-nine thousand, five hundred sixty-nine".