2009456 has 10 divisors (see below), whose sum is σ = 3893352. Its totient is φ = 1004720.

The previous prime is 2009437. The next prime is 2009461. The reversal of 2009456 is 6549002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62780 + ... + 62811.

2^2009456 is an apocalyptic number.

It is an amenable number.

2009456 is a deficient number, since it is larger than the sum of its proper divisors (1883896).

2009456 is a wasteful number, since it uses less digits than its factorization.

2009456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125599 (or 125593 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2009456 is about 1417.5528208853. The cubic root of 2009456 is about 126.1903564302.

The spelling of 2009456 in words is "two million, nine thousand, four hundred fifty-six".