240489749 has 2 divisors, whose sum is σ = 240489750. Its totient is φ = 240489748.

The previous prime is 240489737. The next prime is 240489757. The reversal of 240489749 is 947984042.

240489749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206640625 + 33849124 = 14375^2 + 5818^2 .

It is a cyclic number.

It is not a de Polignac number, because 240489749 - 2⁸ = 240489493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240489719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120244874 + 120244875.

It is an arithmetic number, because the mean of its divisors is an integer number (120244875).

Almost surely, 2^240489749 is an apocalyptic number.

It is an amenable number.

240489749 is a deficient number, since it is larger than the sum of its proper divisors (1).

240489749 is an equidigital number, since it uses as much as digits as its factorization.

240489749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 240489749 is about 15507.7319102440. The cubic root of 240489749 is about 621.8689262102.

The spelling of 240489749 in words is "two hundred forty million, four hundred eighty-nine thousand, seven hundred forty-nine".