164949 has 4 divisors (see below), whose sum is σ = 219936. Its totient is φ = 109964.

The previous prime is 164911. The next prime is 164953. The reversal of 164949 is 949461.

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 164949 - 2⁷ = 164821 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27489 + ... + 27494.

It is an arithmetic number, because the mean of its divisors is an integer number (54984).

2¹⁶⁴⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

164949 is a deficient number, since it is larger than the sum of its proper divisors (54987).

164949 is an equidigital number, since it uses as much as digits as its factorization.

164949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54986.

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

The square root of 164949 is about 406.1391387197. The cubic root of 164949 is about 54.8424139292.

The spelling of 164949 in words is "one hundred sixty-four thousand, nine hundred forty-nine".