86899679 has 2 divisors, whose sum is σ = 86899680. Its totient is φ = 86899678.

The previous prime is 86899651. The next prime is 86899691. The reversal of 86899679 is 97699868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86899679 - 2²⁴ = 70122463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86899639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43449839 + 43449840.

It is an arithmetic number, because the mean of its divisors is an integer number (43449840).

Almost surely, 2^86899679 is an apocalyptic number.

86899679 is a deficient number, since it is larger than the sum of its proper divisors (1).

86899679 is an equidigital number, since it uses as much as digits as its factorization.

86899679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 62.

The square root of 86899679 is about 9321.9997318172. Note that the first 3 decimals coincide. The cubic root of 86899679 is about 442.9343797549.

It can be divided in two parts, 86899 and 679, that added together give a palindrome (87578).

The spelling of 86899679 in words is "eighty-six million, eight hundred ninety-nine thousand, six hundred seventy-nine".