2658949 has 4 divisors (see below), whose sum is σ = 2662560. Its totient is φ = 2655340.

The previous prime is 2658947. The next prime is 2658977. The reversal of 2658949 is 9498562.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2658949 - 2¹ = 2658947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2658941) 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, 259 + ... + 2320.

It is an arithmetic number, because the mean of its divisors is an integer number (665640).

2^2658949 is an apocalyptic number.

It is an amenable number.

2658949 is a deficient number, since it is larger than the sum of its proper divisors (3611).

2658949 is a wasteful number, since it uses less digits than its factorization.

2658949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610.

The product of its digits is 155520, while the sum is 43.

The square root of 2658949 is about 1630.6284064740. The cubic root of 2658949 is about 138.5383473253.

The spelling of 2658949 in words is "two million, six hundred fifty-eight thousand, nine hundred forty-nine".