84307871 has 2 divisors, whose sum is σ = 84307872. Its totient is φ = 84307870.

The previous prime is 84307859. The next prime is 84307877. The reversal of 84307871 is 17870348.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84307871 - 2¹⁸ = 84045727 is a prime.

It is a super-2 number, since 2×84307871² = 14215634225105282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84307877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42153935 + 42153936.

It is an arithmetic number, because the mean of its divisors is an integer number (42153936).

Almost surely, 2^84307871 is an apocalyptic number.

84307871 is a deficient number, since it is larger than the sum of its proper divisors (1).

84307871 is an equidigital number, since it uses as much as digits as its factorization.

84307871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 84307871 is about 9181.9317684243. The cubic root of 84307871 is about 438.4863120119.

The spelling of 84307871 in words is "eighty-four million, three hundred seven thousand, eight hundred seventy-one".