12023949 has 16 divisors (see below), whose sum is σ = 18506880. Its totient is φ = 6801600.

The previous prime is 12023933. The next prime is 12023953. The reversal of 12023949 is 94932021.

It is not a de Polignac number, because 12023949 - 2⁴ = 12023933 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714 + ... + 4955.

It is an arithmetic number, because the mean of its divisors is an integer number (1156680).

Almost surely, 2^12023949 is an apocalyptic number.

It is an amenable number.

12023949 is a deficient number, since it is larger than the sum of its proper divisors (6482931).

12023949 is a wasteful number, since it uses less digits than its factorization.

12023949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5780.

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

The square root of 12023949 is about 3467.5566325584. The cubic root of 12023949 is about 229.0950515324.

It can be divided in two parts, 1202 and 3949, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 12023949 in words is "twelve million, twenty-three thousand, nine hundred forty-nine".