786540449 has 2 divisors, whose sum is σ = 786540450. Its totient is φ = 786540448.

The previous prime is 786540383. The next prime is 786540451. The reversal of 786540449 is 944045687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 765518224 + 21022225 = 27668^2 + 4585^2 .

It is a cyclic number.

It is not a de Polignac number, because 786540449 - 2¹² = 786536353 is a prime.

Together with 786540451, 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 (786540049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393270224 + 393270225.

It is an arithmetic number, because the mean of its divisors is an integer number (393270225).

Almost surely, 2^786540449 is an apocalyptic number.

It is an amenable number.

786540449 is a deficient number, since it is larger than the sum of its proper divisors (1).

786540449 is an equidigital number, since it uses as much as digits as its factorization.

786540449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 786540449 is about 28045.3284701749. The cubic root of 786540449 is about 923.0821521166.

The spelling of 786540449 in words is "seven hundred eighty-six million, five hundred forty thousand, four hundred forty-nine".