2943689 has 8 divisors (see below), whose sum is σ = 3541440. Its totient is φ = 2390256.

The previous prime is 2943671. The next prime is 2943691. The reversal of 2943689 is 9863492.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2943689 - 2¹⁶ = 2878153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2943649) 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, 10934 + ... + 11199.

It is an arithmetic number, because the mean of its divisors is an integer number (442680).

2^2943689 is an apocalyptic number.

It is an amenable number.

2943689 is a deficient number, since it is larger than the sum of its proper divisors (597751).

2943689 is a wasteful number, since it uses less digits than its factorization.

2943689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22159.

The product of its digits is 93312, while the sum is 41.

The square root of 2943689 is about 1715.7182169576. The cubic root of 2943689 is about 143.3168678881.

The spelling of 2943689 in words is "two million, nine hundred forty-three thousand, six hundred eighty-nine".