86410391 has 2 divisors, whose sum is σ = 86410392. Its totient is φ = 86410390.

The previous prime is 86410321. The next prime is 86410399. The reversal of 86410391 is 19301468.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86410391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86410399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43205195 + 43205196.

It is an arithmetic number, because the mean of its divisors is an integer number (43205196).

Almost surely, 2^86410391 is an apocalyptic number.

86410391 is a deficient number, since it is larger than the sum of its proper divisors (1).

86410391 is an equidigital number, since it uses as much as digits as its factorization.

86410391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 86410391 is about 9295.7189608981. The cubic root of 86410391 is about 442.1015017057.

It can be divided in two parts, 8 and 6410391, that multiplied together give a triangular number (51283128 = T₁₀₁₂₇).

The spelling of 86410391 in words is "eighty-six million, four hundred ten thousand, three hundred ninety-one".