840894982 has 4 divisors (see below), whose sum is σ = 1261342476. Its totient is φ = 420447490.

The previous prime is 840894949. The next prime is 840895007. The reversal of 840894982 is 289498048.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210223744 + ... + 210223747.

It is an arithmetic number, because the mean of its divisors is an integer number (315335619).

Almost surely, 2^840894982 is an apocalyptic number.

840894982 is a deficient number, since it is larger than the sum of its proper divisors (420447494).

840894982 is a wasteful number, since it uses less digits than its factorization.

840894982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420447493.

The product of its (nonzero) digits is 1327104, while the sum is 52.

The square root of 840894982 is about 28998.1892882987. The cubic root of 840894982 is about 943.8737764238.

The spelling of 840894982 in words is "eight hundred forty million, eight hundred ninety-four thousand, nine hundred eighty-two".