1068840409 has 8 divisors (see below), whose sum is σ = 1315496000. Its totient is φ = 845675856.

The previous prime is 1068840341. The next prime is 1068840431. The reversal of 1068840409 is 9040488601.

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 1068840409 - 2⁷ = 1068840281 is a prime.

It is a super-2 number, since 2×1068840409² = 2284839639822574562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1068840449) 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, 5872659 + ... + 5872840.

It is an arithmetic number, because the mean of its divisors is an integer number (164437000).

Almost surely, 2^1068840409 is an apocalyptic number.

It is an amenable number.

1068840409 is a deficient number, since it is larger than the sum of its proper divisors (246655591).

1068840409 is a wasteful number, since it uses less digits than its factorization.

1068840409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11745519.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1068840409 is about 32693.1247971190. The cubic root of 1068840409 is about 1022.4395052714.

The spelling of 1068840409 in words is "one billion, sixty-eight million, eight hundred forty thousand, four hundred nine".