2847949 has 8 divisors (see below), whose sum is σ = 3110072. Its totient is φ = 2592000.

The previous prime is 2847937. The next prime is 2847961. The reversal of 2847949 is 9497482.

It is an interprime number because it is at equal distance from previous prime (2847937) and next prime (2847961).

It can be written as a sum of positive squares in 4 ways, for example, as 174724 + 2673225 = 418^2 + 1635^2 .

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 2847949 - 2⁵ = 2847917 is a prime.

It is a super-2 number, since 2×2847949² = 16221627013202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2847349) 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 7 ways as a sum of consecutive naturals, for example, 552 + ... + 2449.

It is an arithmetic number, because the mean of its divisors is an integer number (388759).

2^2847949 is an apocalyptic number.

It is an amenable number.

2847949 is a deficient number, since it is larger than the sum of its proper divisors (262123).

2847949 is a wasteful number, since it uses less digits than its factorization.

2847949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087.

The product of its digits is 145152, while the sum is 43.

The square root of 2847949 is about 1687.5867385115. The cubic root of 2847949 is about 141.7459751239.

The spelling of 2847949 in words is "two million, eight hundred forty-seven thousand, nine hundred forty-nine".