2149923 has 8 divisors (see below), whose sum is σ = 2906128. Its totient is φ = 1413504.

The previous prime is 2149909. The next prime is 2149933. The reversal of 2149923 is 3299412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2149923 - 2⁶ = 2149859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2149933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4690 + ... + 5127.

It is an arithmetic number, because the mean of its divisors is an integer number (363266).

2^2149923 is an apocalyptic number.

2149923 is a deficient number, since it is larger than the sum of its proper divisors (756205).

2149923 is an equidigital number, since it uses as much as digits as its factorization.

2149923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9893.

The product of its digits is 3888, while the sum is 30.

The square root of 2149923 is about 1466.2615728444. The cubic root of 2149923 is about 129.0647472577.

The spelling of 2149923 in words is "two million, one hundred forty-nine thousand, nine hundred twenty-three".