240022409 has 8 divisors (see below), whose sum is σ = 264785760. Its totient is φ = 215749600.

The previous prime is 240022403. The next prime is 240022427. The reversal of 240022409 is 904220042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-240022409 is a prime.

It is a super-2 number, since 2×240022409² = 115221513644326562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240022403) 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, 121607 + ... + 123564.

It is an arithmetic number, because the mean of its divisors is an integer number (33098220).

Almost surely, 2^240022409 is an apocalyptic number.

It is an amenable number.

240022409 is a deficient number, since it is larger than the sum of its proper divisors (24763351).

240022409 is a wasteful number, since it uses less digits than its factorization.

240022409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245271.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 240022409 is about 15492.6566153129. The cubic root of 240022409 is about 621.4658422481.

The spelling of 240022409 in words is "two hundred forty million, twenty-two thousand, four hundred nine".