409240012 has 48 divisors (see below), whose sum is σ = 794626560. Its totient is φ = 183541248.

The previous prime is 409240001. The next prime is 409240019. The reversal of 409240012 is 210042904.

It is not an unprimeable number, because it can be changed into a prime (409240019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178908 + ... + 181180.

It is an arithmetic number, because the mean of its divisors is an integer number (16554720).

Almost surely, 2^409240012 is an apocalyptic number.

It is an amenable number.

409240012 is a deficient number, since it is larger than the sum of its proper divisors (385386548).

409240012 is a wasteful number, since it uses less digits than its factorization.

409240012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422 (or 2420 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 409240012 is about 20229.6814606657. The cubic root of 409240012 is about 742.4365823845.

Adding to 409240012 its reverse (210042904), we get a palindrome (619282916).

The spelling of 409240012 in words is "four hundred nine million, two hundred forty thousand, twelve".