2009449087 has 2 divisors, whose sum is σ = 2009449088. Its totient is φ = 2009449086.

The previous prime is 2009449069. The next prime is 2009449111. The reversal of 2009449087 is 7809449002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2009449087 - 2¹⁵ = 2009416319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2009449037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004724543 + 1004724544.

It is an arithmetic number, because the mean of its divisors is an integer number (1004724544).

Almost surely, 2^2009449087 is an apocalyptic number.

2009449087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009449087 is an equidigital number, since it uses as much as digits as its factorization.

2009449087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 2009449087 is about 44826.8790682555. The cubic root of 2009449087 is about 1261.9021172187.

The spelling of 2009449087 in words is "two billion, nine million, four hundred forty-nine thousand, eighty-seven".