2009437 has 2 divisors, whose sum is σ = 2009438. Its totient is φ = 2009436.

The previous prime is 2009407. The next prime is 2009461. The reversal of 2009437 is 7349002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1572516 + 436921 = 1254^2 + 661^2 .

It is a cyclic number.

It is not a de Polignac number, because 2009437 - 2¹¹ = 2007389 is a prime.

2009437 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2009407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004718 + 1004719.

It is an arithmetic number, because the mean of its divisors is an integer number (1004719).

2^2009437 is an apocalyptic number.

It is an amenable number.

2009437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009437 is an equidigital number, since it uses as much as digits as its factorization.

2009437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 2009437 is about 1417.5461191792. The cubic root of 2009437 is about 126.1899587066.

The spelling of 2009437 in words is "two million, nine thousand, four hundred thirty-seven".