1029649009 has 2 divisors, whose sum is σ = 1029649010. Its totient is φ = 1029649008.

The previous prime is 1029648953. The next prime is 1029649037. The reversal of 1029649009 is 9009469201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 992439009 + 37210000 = 31503^2 + 6100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1029649009 - 2¹³ = 1029640817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1029649409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514824504 + 514824505.

It is an arithmetic number, because the mean of its divisors is an integer number (514824505).

Almost surely, 2^1029649009 is an apocalyptic number.

It is an amenable number.

1029649009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1029649009 is an equidigital number, since it uses as much as digits as its factorization.

1029649009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 1029649009 is about 32088.1443682866. The cubic root of 1029649009 is about 1009.7869069769.

The spelling of 1029649009 in words is "one billion, twenty-nine million, six hundred forty-nine thousand, nine".