2909456 has 40 divisors (see below), whose sum is σ = 6273408. Its totient is φ = 1296000.

The previous prime is 2909453. The next prime is 2909461. The reversal of 2909456 is 6549092.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2909453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10601 + ... + 10871.

2^2909456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2909456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3136704).

2909456 is an abundant number, since it is smaller than the sum of its proper divisors (3363952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2909456 is a wasteful number, since it uses less digits than its factorization.

2909456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2909456 is about 1705.7127542467. The cubic root of 2909456 is about 142.7591426919.

The spelling of 2909456 in words is "two million, nine hundred nine thousand, four hundred fifty-six".