86814149 has 2 divisors, whose sum is σ = 86814150. Its totient is φ = 86814148.

The previous prime is 86814113. The next prime is 86814151. The reversal of 86814149 is 94141868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78889924 + 7924225 = 8882^2 + 2815^2 .

It is a cyclic number.

It is not a de Polignac number, because 86814149 - 2²⁴ = 70036933 is a prime.

Together with 86814151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86814109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43407074 + 43407075.

It is an arithmetic number, because the mean of its divisors is an integer number (43407075).

Almost surely, 2^86814149 is an apocalyptic number.

It is an amenable number.

86814149 is a deficient number, since it is larger than the sum of its proper divisors (1).

86814149 is an equidigital number, since it uses as much as digits as its factorization.

86814149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 41.

The square root of 86814149 is about 9317.4110674586. The cubic root of 86814149 is about 442.7890143798.

The spelling of 86814149 in words is "eighty-six million, eight hundred fourteen thousand, one hundred forty-nine".