650738939 has 2 divisors, whose sum is σ = 650738940. Its totient is φ = 650738938.

The previous prime is 650738873. The next prime is 650738947. The reversal of 650738939 is 939837056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 650738939 - 2²⁴ = 633961723 is a prime.

It is a super-2 number, since 2×650738939² = 846922333461691442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (650738969) 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, 325369469 + 325369470.

It is an arithmetic number, because the mean of its divisors is an integer number (325369470).

Almost surely, 2^650738939 is an apocalyptic number.

650738939 is a deficient number, since it is larger than the sum of its proper divisors (1).

650738939 is an equidigital number, since it uses as much as digits as its factorization.

650738939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The square root of 650738939 is about 25509.5852377102. The cubic root of 650738939 is about 866.5672363413.

The spelling of 650738939 in words is "six hundred fifty million, seven hundred thirty-eight thousand, nine hundred thirty-nine".