2894809 has 8 divisors (see below), whose sum is σ = 3017160. Its totient is φ = 2774016.

The previous prime is 2894767. The next prime is 2894813. The reversal of 2894809 is 9084982.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2039184 + 855625 = 1428^2 + 925^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2894809 is a prime.

It is an Ulam number.

2894809 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2894839) 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, 4729 + ... + 5305.

It is an arithmetic number, because the mean of its divisors is an integer number (377145).

2^2894809 is an apocalyptic number.

2894809 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2894809 is a deficient number, since it is larger than the sum of its proper divisors (122351).

2894809 is a wasteful number, since it uses less digits than its factorization.

2894809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 2894809 is about 1701.4138238536. The cubic root of 2894809 is about 142.5191766539.

The spelling of 2894809 in words is "two million, eight hundred ninety-four thousand, eight hundred nine".