1340404286 has 16 divisors (see below), whose sum is σ = 2279230800. Its totient is φ = 586087488.

The previous prime is 1340404271. The next prime is 1340404309. The reversal of 1340404286 is 6824040431.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356191 + ... + 1357178.

It is an arithmetic number, because the mean of its divisors is an integer number (142451925).

Almost surely, 2^1340404286 is an apocalyptic number.

1340404286 is a deficient number, since it is larger than the sum of its proper divisors (938826514).

1340404286 is a wasteful number, since it uses less digits than its factorization.

1340404286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713403.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 1340404286 is about 36611.5321449403. The cubic root of 1340404286 is about 1102.5846346074.

The spelling of 1340404286 in words is "one billion, three hundred forty million, four hundred four thousand, two hundred eighty-six".