84145838 has 12 divisors (see below), whose sum is σ = 146826072. Its totient is φ = 36062460.

The previous prime is 84145819. The next prime is 84145847. The reversal of 84145838 is 83854148.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 84145795 and 84145804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 429218 + ... + 429413.

It is an arithmetic number, because the mean of its divisors is an integer number (12235506).

Almost surely, 2^84145838 is an apocalyptic number.

84145838 is a deficient number, since it is larger than the sum of its proper divisors (62680234).

84145838 is a wasteful number, since it uses less digits than its factorization.

84145838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858647 (or 858640 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 84145838 is about 9173.1040547897. The cubic root of 84145838 is about 438.2052199564.

The spelling of 84145838 in words is "eighty-four million, one hundred forty-five thousand, eight hundred thirty-eight".