2989657 has 4 divisors (see below), whose sum is σ = 3261456. Its totient is φ = 2717860.

The previous prime is 2989633. The next prime is 2989673. The reversal of 2989657 is 7569892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2989657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2989757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135883 + ... + 135904.

It is an arithmetic number, because the mean of its divisors is an integer number (815364).

2^2989657 is an apocalyptic number.

It is an amenable number.

2989657 is a deficient number, since it is larger than the sum of its proper divisors (271799).

2989657 is a wasteful number, since it uses less digits than its factorization.

2989657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271798.

The product of its digits is 272160, while the sum is 46.

The square root of 2989657 is about 1729.0624627237. The cubic root of 2989657 is about 144.0590196599.

The spelling of 2989657 in words is "two million, nine hundred eighty-nine thousand, six hundred fifty-seven".