308949 has 4 divisors (see below), whose sum is σ = 411936. Its totient is φ = 205964.

The previous prime is 308939. The next prime is 308951. The reversal of 308949 is 949803.

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 308949 - 2⁴ = 308933 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51489 + ... + 51494.

It is an arithmetic number, because the mean of its divisors is an integer number (102984).

2³⁰⁸⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

308949 is a deficient number, since it is larger than the sum of its proper divisors (102987).

308949 is a wasteful number, since it uses less digits than its factorization.

308949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102986.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 308949 is about 555.8318090934. The cubic root of 308949 is about 67.6024233810.

It can be divided in two parts, 30894 and 9, that added together give a palindrome (30903).

The spelling of 308949 in words is "three hundred eight thousand, nine hundred forty-nine".