Search a number
2949 = 3983

2949 has 4 divisors (see below), whose sum is σ = 3936. Its totient is φ = 1964.

The previous prime is 2939. The next prime is 2953. The reversal of 2949 is 9492.

It can be divided in two parts, 294 and 9, that added together give a palindrome (303).

2949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 2949 - 25 = 2917 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 13.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2909) 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, 489 + ... + 494.

It is an arithmetic number, because the mean of its divisors is an integer number (984).

22949 is an apocalyptic number.

It is an amenable number.

2949 is a deficient number, since it is larger than the sum of its proper divisors (987).

2949 is an equidigital number, since it uses as much as digits as its factorization.

2949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986.

The product of its digits is 648, while the sum is 24.

The square root of 2949 is about 54.3046959295. The cubic root of 2949 is about 14.3403006809.

The spelling of 2949 in words is "two thousand, nine hundred forty-nine".

Divisors: 1 3 983 2949