2947985 has 8 divisors (see below), whose sum is σ = 3546816. Its totient is φ = 2352240.

The previous prime is 2947949. The next prime is 2947999. The reversal of 2947985 is 5897492.

It is a happy number.

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

It is not a de Polignac number, because 2947985 - 2⁸ = 2947729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3230 + ... + 4040.

It is an arithmetic number, because the mean of its divisors is an integer number (443352).

2^2947985 is an apocalyptic number.

It is an amenable number.

2947985 is a deficient number, since it is larger than the sum of its proper divisors (598831).

2947985 is an equidigital number, since it uses as much as digits as its factorization.

2947985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543.

The product of its digits is 181440, while the sum is 44.

The square root of 2947985 is about 1716.9697143514. The cubic root of 2947985 is about 143.3865525588.

The spelling of 2947985 in words is "two million, nine hundred forty-seven thousand, nine hundred eighty-five".