649030999 has 2 divisors, whose sum is σ = 649031000. Its totient is φ = 649030998.

The previous prime is 649030957. The next prime is 649031003. The reversal of 649030999 is 999030946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 649030999 - 2⁷ = 649030871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649030939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324515499 + 324515500.

It is an arithmetic number, because the mean of its divisors is an integer number (324515500).

Almost surely, 2^649030999 is an apocalyptic number.

649030999 is a deficient number, since it is larger than the sum of its proper divisors (1).

649030999 is an equidigital number, since it uses as much as digits as its factorization.

649030999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 49.

The square root of 649030999 is about 25476.0868070432. The cubic root of 649030999 is about 865.8084366147.

The spelling of 649030999 in words is "six hundred forty-nine million, thirty thousand, nine hundred ninety-nine".