1009666739 has 2 divisors, whose sum is σ = 1009666740. Its totient is φ = 1009666738.

The previous prime is 1009666729. The next prime is 1009666759. The reversal of 1009666739 is 9376669001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1009666739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1009666693 and 1009666702.

It is not a weakly prime, because it can be changed into another prime (1009666709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504833369 + 504833370.

It is an arithmetic number, because the mean of its divisors is an integer number (504833370).

Almost surely, 2^1009666739 is an apocalyptic number.

1009666739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009666739 is an equidigital number, since it uses as much as digits as its factorization.

1009666739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 1009666739 is about 31775.2535631110. The cubic root of 1009666739 is about 1003.2119188654.

The spelling of 1009666739 in words is "one billion, nine million, six hundred sixty-six thousand, seven hundred thirty-nine".