2009517401 has 2 divisors, whose sum is σ = 2009517402. Its totient is φ = 2009517400.

The previous prime is 2009517361. The next prime is 2009517437. The reversal of 2009517401 is 1047159002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1742227600 + 267289801 = 41740^2 + 16349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2009517401 is a prime.

It is not a weakly prime, because it can be changed into another prime (2009517491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004758700 + 1004758701.

It is an arithmetic number, because the mean of its divisors is an integer number (1004758701).

Almost surely, 2^2009517401 is an apocalyptic number.

It is an amenable number.

2009517401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009517401 is an equidigital number, since it uses as much as digits as its factorization.

2009517401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 2009517401 is about 44827.6410376455. The cubic root of 2009517401 is about 1261.9164170924.

The spelling of 2009517401 in words is "two billion, nine million, five hundred seventeen thousand, four hundred one".