240277649 has 2 divisors, whose sum is σ = 240277650. Its totient is φ = 240277648.

The previous prime is 240277627. The next prime is 240277651. The reversal of 240277649 is 946772042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237930625 + 2347024 = 15425^2 + 1532^2 .

It is a cyclic number.

It is not a de Polignac number, because 240277649 - 2⁸ = 240277393 is a prime.

Together with 240277651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240277669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120138824 + 120138825.

It is an arithmetic number, because the mean of its divisors is an integer number (120138825).

Almost surely, 2^240277649 is an apocalyptic number.

It is an amenable number.

240277649 is a deficient number, since it is larger than the sum of its proper divisors (1).

240277649 is an equidigital number, since it uses as much as digits as its factorization.

240277649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 240277649 is about 15500.8918775663. The cubic root of 240277649 is about 621.6860532815.

The spelling of 240277649 in words is "two hundred forty million, two hundred seventy-seven thousand, six hundred forty-nine".