601109309 has 2 divisors, whose sum is σ = 601109310. Its totient is φ = 601109308.

The previous prime is 601109261. The next prime is 601109317. The reversal of 601109309 is 903901106.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 578546809 + 22562500 = 24053^2 + 4750^2 .

It is a cyclic number.

It is not a de Polignac number, because 601109309 - 2⁸ = 601109053 is a prime.

It is a super-2 number, since 2×601109309² = 722664802732914962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601109329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300554654 + 300554655.

It is an arithmetic number, because the mean of its divisors is an integer number (300554655).

Almost surely, 2^601109309 is an apocalyptic number.

It is an amenable number.

601109309 is a deficient number, since it is larger than the sum of its proper divisors (1).

601109309 is an equidigital number, since it uses as much as digits as its factorization.

601109309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 601109309 is about 24517.5306464579. The cubic root of 601109309 is about 843.9521383167.

The spelling of 601109309 in words is "six hundred one million, one hundred nine thousand, three hundred nine".