86851097 has 2 divisors, whose sum is σ = 86851098. Its totient is φ = 86851096.

The previous prime is 86851087. The next prime is 86851103. The reversal of 86851097 is 79015868.

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., 58003456 + 28847641 = 7616^2 + 5371^2 .

It is a cyclic number.

It is not a de Polignac number, because 86851097 - 2⁴ = 86851081 is a prime.

It is a super-2 number, since 2×86851097² = 15086226100206818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86851067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43425548 + 43425549.

It is an arithmetic number, because the mean of its divisors is an integer number (43425549).

Almost surely, 2^86851097 is an apocalyptic number.

It is an amenable number.

86851097 is a deficient number, since it is larger than the sum of its proper divisors (1).

86851097 is an equidigital number, since it uses as much as digits as its factorization.

86851097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 86851097 is about 9319.3935961521. The cubic root of 86851097 is about 442.8518222987.

The spelling of 86851097 in words is "eighty-six million, eight hundred fifty-one thousand, ninety-seven".