84857943 has 8 divisors (see below), whose sum is σ = 116793856. Its totient is φ = 54747000.

The previous prime is 84857921. The next prime is 84857951. The reversal of 84857943 is 34975848.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84857943 - 2⁵ = 84857911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84857892 and 84857901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84857953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456133 + ... + 456318.

It is an arithmetic number, because the mean of its divisors is an integer number (14599232).

Almost surely, 2^84857943 is an apocalyptic number.

84857943 is a deficient number, since it is larger than the sum of its proper divisors (31935913).

84857943 is a wasteful number, since it uses less digits than its factorization.

84857943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912485.

The product of its digits is 967680, while the sum is 48.

The square root of 84857943 is about 9211.8371131930. The cubic root of 84857943 is about 439.4378892893.

The spelling of 84857943 in words is "eighty-four million, eight hundred fifty-seven thousand, nine hundred forty-three".