84331871 has 4 divisors (see below), whose sum is σ = 90818952. Its totient is φ = 77844792.

The previous prime is 84331853. The next prime is 84331879. The reversal of 84331871 is 17813348.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84331871 - 2¹⁴ = 84315487 is a prime.

It is a super-2 number, since 2×84331871² = 14223728932721282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84331879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3243521 + ... + 3243546.

It is an arithmetic number, because the mean of its divisors is an integer number (22704738).

Almost surely, 2^84331871 is an apocalyptic number.

84331871 is a deficient number, since it is larger than the sum of its proper divisors (6487081).

84331871 is a wasteful number, since it uses less digits than its factorization.

84331871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6487080.

The product of its digits is 16128, while the sum is 35.

The square root of 84331871 is about 9183.2385899529. The cubic root of 84331871 is about 438.5279161663.

The spelling of 84331871 in words is "eighty-four million, three hundred thirty-one thousand, eight hundred seventy-one".