854640894 has 16 divisors (see below), whose sum is σ = 1710327168. Its totient is φ = 284706072.

The previous prime is 854640893. The next prime is 854640929. The reversal of 854640894 is 498046458.

It is a super-2 number, since 2×854640894² = 1460822115394238472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854640893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32722 + ... + 52725.

It is an arithmetic number, because the mean of its divisors is an integer number (106895448).

Almost surely, 2^854640894 is an apocalyptic number.

854640894 is an abundant number, since it is smaller than the sum of its proper divisors (855686274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

854640894 is a wasteful number, since it uses less digits than its factorization.

854640894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87119.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The square root of 854640894 is about 29234.2418064844. The cubic root of 854640894 is about 948.9890978956.

The spelling of 854640894 in words is "eight hundred fifty-four million, six hundred forty thousand, eight hundred ninety-four".