86915069 has 2 divisors, whose sum is σ = 86915070. Its totient is φ = 86915068.

The previous prime is 86915053. The next prime is 86915093. The reversal of 86915069 is 96051968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85562500 + 1352569 = 9250^2 + 1163^2 .

It is a cyclic number.

It is not a de Polignac number, because 86915069 - 2⁴ = 86915053 is a prime.

It is a super-2 number, since 2×86915069² = 15108458438549522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86915009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43457534 + 43457535.

It is an arithmetic number, because the mean of its divisors is an integer number (43457535).

Almost surely, 2^86915069 is an apocalyptic number.

It is an amenable number.

86915069 is a deficient number, since it is larger than the sum of its proper divisors (1).

86915069 is an equidigital number, since it uses as much as digits as its factorization.

86915069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 86915069 is about 9322.8251619346. The cubic root of 86915069 is about 442.9605262180.

The spelling of 86915069 in words is "eighty-six million, nine hundred fifteen thousand, sixty-nine".