2949689 has 4 divisors (see below), whose sum is σ = 2954724. Its totient is φ = 2944656.

The previous prime is 2949679. The next prime is 2949701. The reversal of 2949689 is 9869492.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2941225 + 8464 = 1715^2 + 92^2 .

It is a cyclic number.

It is not a de Polignac number, because 2949689 - 2¹⁶ = 2884153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2949629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1502 + ... + 2855.

It is an arithmetic number, because the mean of its divisors is an integer number (738681).

2^2949689 is an apocalyptic number.

It is an amenable number.

2949689 is a deficient number, since it is larger than the sum of its proper divisors (5035).

2949689 is an equidigital number, since it uses as much as digits as its factorization.

2949689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034.

The product of its digits is 279936, while the sum is 47.

The square root of 2949689 is about 1717.4658657452. The cubic root of 2949689 is about 143.4141740951.

The spelling of 2949689 in words is "two million, nine hundred forty-nine thousand, six hundred eighty-nine".