240027909 has 16 divisors (see below), whose sum is σ = 350100480. Its totient is φ = 145067760.

The previous prime is 240027889. The next prime is 240027923. The reversal of 240027909 is 909720042.

It is not a de Polignac number, because 240027909 - 2⁹ = 240027397 is a prime.

It is a super-2 number, since 2×240027909² = 115226794197824562, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 240027909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240027929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2202 + ... + 22020.

It is an arithmetic number, because the mean of its divisors is an integer number (21881280).

Almost surely, 2^240027909 is an apocalyptic number.

It is an amenable number.

240027909 is a deficient number, since it is larger than the sum of its proper divisors (110072571).

240027909 is a wasteful number, since it uses less digits than its factorization.

240027909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20200.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 240027909 is about 15492.8341177462. The cubic root of 240027909 is about 621.4705890771.

The spelling of 240027909 in words is "two hundred forty million, twenty-seven thousand, nine hundred nine".