12409238 has 16 divisors (see below), whose sum is σ = 19491840. Its totient is φ = 5917800.

The previous prime is 12409231. The next prime is 12409249. The reversal of 12409238 is 83290421.

It is a self number, because there is not a number n which added to its sum of digits gives 12409238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12409231) 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, 2993 + ... + 5811.

It is an arithmetic number, because the mean of its divisors is an integer number (1218240).

Almost surely, 2^12409238 is an apocalyptic number.

12409238 is a deficient number, since it is larger than the sum of its proper divisors (7082602).

12409238 is a wasteful number, since it uses less digits than its factorization.

12409238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12409238 is about 3522.6748359734. The cubic root of 12409238 is about 231.5163701461.

Adding to 12409238 its reverse (83290421), we get a palindrome (95699659).

The spelling of 12409238 in words is "twelve million, four hundred nine thousand, two hundred thirty-eight".