84857924 has 12 divisors (see below), whose sum is σ = 148575504. Its totient is φ = 42407784.

The previous prime is 84857921. The next prime is 84857951. The reversal of 84857924 is 42975848.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (84857921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6779 + ... + 14685.

It is an arithmetic number, because the mean of its divisors is an integer number (12381292).

Almost surely, 2^84857924 is an apocalyptic number.

It is an amenable number.

84857924 is a deficient number, since it is larger than the sum of its proper divisors (63717580).

84857924 is a wasteful number, since it uses less digits than its factorization.

84857924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10594 (or 10592 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 84857924 is about 9211.8360819111. The cubic root of 84857924 is about 439.4378564921.

The spelling of 84857924 in words is "eighty-four million, eight hundred fifty-seven thousand, nine hundred twenty-four".