840254344 has 16 divisors (see below), whose sum is σ = 1608998400. Its totient is φ = 411188112.

The previous prime is 840254339. The next prime is 840254353. The reversal of 840254344 is 443452048.

It is a super-2 number, since 2×840254344² = 1412054725221740672, which contains 22 as substring.

It is an unprimeable number.

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, 1116984 + ... + 1117735.

It is an arithmetic number, because the mean of its divisors is an integer number (100562400).

Almost surely, 2^840254344 is an apocalyptic number.

It is an amenable number.

840254344 is a deficient number, since it is larger than the sum of its proper divisors (768744056).

840254344 is a wasteful number, since it uses less digits than its factorization.

840254344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234772 (or 2234768 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

The square root of 840254344 is about 28987.1410111449. The cubic root of 840254344 is about 943.6340179736.

The spelling of 840254344 in words is "eight hundred forty million, two hundred fifty-four thousand, three hundred forty-four".