12232409 has 16 divisors (see below), whose sum is σ = 15024000. Its totient is φ = 9927792.

The previous prime is 12232397. The next prime is 12232421. The reversal of 12232409 is 90423221.

It is an interprime number because it is at equal distance from previous prime (12232397) and next prime (12232421).

It is not a de Polignac number, because 12232409 - 2¹² = 12228313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12232489) 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, 5579 + ... + 7455.

It is an arithmetic number, because the mean of its divisors is an integer number (939000).

Almost surely, 2^12232409 is an apocalyptic number.

12232409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12232409 is a deficient number, since it is larger than the sum of its proper divisors (2791591).

12232409 is an equidigital number, since it uses as much as digits as its factorization.

12232409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1903 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 12232409 is about 3497.4860971847. The cubic root of 12232409 is about 230.4114186346.

The spelling of 12232409 in words is "twelve million, two hundred thirty-two thousand, four hundred nine".