601000009 has 2 divisors, whose sum is σ = 601000010. Its totient is φ = 601000008.

The previous prime is 600999989. The next prime is 601000013. The reversal of 601000009 is 900000106.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336612409 + 264387600 = 18347^2 + 16260^2 .

It is a cyclic number.

It is not a de Polignac number, because 601000009 - 2²⁹ = 64129097 is a prime.

It is a super-2 number, since 2×601000009² = 722402021636000162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 600999956 and 601000001.

It is not a weakly prime, because it can be changed into another prime (601000079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300500004 + 300500005.

It is an arithmetic number, because the mean of its divisors is an integer number (300500005).

Almost surely, 2^601000009 is an apocalyptic number.

It is an amenable number.

601000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

601000009 is an equidigital number, since it uses as much as digits as its factorization.

601000009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 601000009 is about 24515.3015278214. The cubic root of 601000009 is about 843.9009831392.

The spelling of 601000009 in words is "six hundred one million, nine", and thus it is an aban number.