240196309 has 16 divisors (see below), whose sum is σ = 257420800. Its totient is φ = 223470576.

The previous prime is 240196301. The next prime is 240196321. The reversal of 240196309 is 903691042.

240196309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 240196309 - 2³ = 240196301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240196301) 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, 271582 + ... + 272464.

It is an arithmetic number, because the mean of its divisors is an integer number (16088800).

Almost surely, 2^240196309 is an apocalyptic number.

It is an amenable number.

240196309 is a deficient number, since it is larger than the sum of its proper divisors (17224491).

240196309 is a wasteful number, since it uses less digits than its factorization.

240196309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 240196309 is about 15498.2679354823. The cubic root of 240196309 is about 621.6158932658.

The spelling of 240196309 in words is "two hundred forty million, one hundred ninety-six thousand, three hundred nine".