854639893 has 8 divisors (see below), whose sum is σ = 916596000. Its totient is φ = 794381328.

The previous prime is 854639887. The next prime is 854639909. The reversal of 854639893 is 398936458.

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

It is a cyclic number.

It is not a de Polignac number, because 854639893 - 2⁹ = 854639381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854639843) 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, 423343 + ... + 425356.

It is an arithmetic number, because the mean of its divisors is an integer number (114574500).

Almost surely, 2^854639893 is an apocalyptic number.

It is an amenable number.

854639893 is a deficient number, since it is larger than the sum of its proper divisors (61956107).

854639893 is a wasteful number, since it uses less digits than its factorization.

854639893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848771.

The product of its digits is 5598720, while the sum is 55.

The square root of 854639893 is about 29234.2246861448. The cubic root of 854639893 is about 948.9887273936.

The spelling of 854639893 in words is "eight hundred fifty-four million, six hundred thirty-nine thousand, eight hundred ninety-three".