202030009 has 2 divisors, whose sum is σ = 202030010. Its totient is φ = 202030008.

The previous prime is 202029973. The next prime is 202030033. The reversal of 202030009 is 900030202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123654400 + 78375609 = 11120^2 + 8853^2 .

It is a cyclic number.

It is not a de Polignac number, because 202030009 - 2²⁵ = 168475577 is a prime.

It is a super-2 number, since 2×202030009² = 81632249073080162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202029974 and 202030001.

It is not a weakly prime, because it can be changed into another prime (202030079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101015004 + 101015005.

It is an arithmetic number, because the mean of its divisors is an integer number (101015005).

Almost surely, 2^202030009 is an apocalyptic number.

It is an amenable number.

202030009 is a deficient number, since it is larger than the sum of its proper divisors (1).

202030009 is an equidigital number, since it uses as much as digits as its factorization.

202030009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 202030009 is about 14213.7260772818. The cubic root of 202030009 is about 586.7754849726.

The spelling of 202030009 in words is "two hundred two million, thirty thousand, nine".