240684149 has 4 divisors (see below), whose sum is σ = 247189164. Its totient is φ = 234179136.

The previous prime is 240684131. The next prime is 240684161. The reversal of 240684149 is 941486042.

240684149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 156375025 + 84309124 = 12505^2 + 9182^2 .

It is a cyclic number.

It is not a de Polignac number, because 240684149 - 2⁸ = 240683893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240684109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3252452 + ... + 3252525.

It is an arithmetic number, because the mean of its divisors is an integer number (61797291).

Almost surely, 2^240684149 is an apocalyptic number.

It is an amenable number.

240684149 is a deficient number, since it is larger than the sum of its proper divisors (6505015).

240684149 is an equidigital number, since it uses as much as digits as its factorization.

240684149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6505014.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 240684149 is about 15513.9984852391. The cubic root of 240684149 is about 622.0364437589.

The spelling of 240684149 in words is "two hundred forty million, six hundred eighty-four thousand, one hundred forty-nine".