649406041 has 2 divisors, whose sum is σ = 649406042. Its totient is φ = 649406040.

The previous prime is 649405993. The next prime is 649406047. The reversal of 649406041 is 140604946.

649406041 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., 338412816 + 310993225 = 18396^2 + 17635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649406041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 649405988 and 649406006.

It is not a weakly prime, because it can be changed into another prime (649406047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324703020 + 324703021.

It is an arithmetic number, because the mean of its divisors is an integer number (324703021).

Almost surely, 2^649406041 is an apocalyptic number.

It is an amenable number.

649406041 is a deficient number, since it is larger than the sum of its proper divisors (1).

649406041 is an equidigital number, since it uses as much as digits as its factorization.

649406041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 649406041 is about 25483.4464113471. The cubic root of 649406041 is about 865.9751733874.

The spelling of 649406041 in words is "six hundred forty-nine million, four hundred six thousand, forty-one".