2409923 has 4 divisors (see below), whose sum is σ = 2445960. Its totient is φ = 2373888.

The previous prime is 2409907. The next prime is 2409947. The reversal of 2409923 is 3299042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3299042 = 2 ⋅1649521.

It is a cyclic number.

It is not a de Polignac number, because 2409923 - 2⁴ = 2409907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2409983) 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, 17918 + ... + 18051.

It is an arithmetic number, because the mean of its divisors is an integer number (611490).

2^2409923 is an apocalyptic number.

2409923 is a deficient number, since it is larger than the sum of its proper divisors (36037).

2409923 is an equidigital number, since it uses as much as digits as its factorization.

2409923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36036.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2409923 is about 1552.3926693978. The cubic root of 2409923 is about 134.0708580467.

The spelling of 2409923 in words is "two million, four hundred nine thousand, nine hundred twenty-three".