2069890729 has 2 divisors, whose sum is σ = 2069890730. Its totient is φ = 2069890728.

The previous prime is 2069890651. The next prime is 2069890751. The reversal of 2069890729 is 9270989602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2017357225 + 52533504 = 44915^2 + 7248^2 .

It is a cyclic number.

It is not a de Polignac number, because 2069890729 - 2¹⁵ = 2069857961 is a prime.

It is not a weakly prime, because it can be changed into another prime (2069893729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034945364 + 1034945365.

It is an arithmetic number, because the mean of its divisors is an integer number (1034945365).

Almost surely, 2^2069890729 is an apocalyptic number.

It is an amenable number.

2069890729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2069890729 is an equidigital number, since it uses as much as digits as its factorization.

2069890729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 2069890729 is about 45496.0517957328. The cubic root of 2069890729 is about 1274.4294725910.

The spelling of 2069890729 in words is "two billion, sixty-nine million, eight hundred ninety thousand, seven hundred twenty-nine".