12409870 has 32 divisors (see below), whose sum is σ = 24631776. Its totient is φ = 4464000.

The previous prime is 12409849. The next prime is 12409879. The reversal of 12409870 is 7890421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12409879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10552 + ... + 11668.

It is an arithmetic number, because the mean of its divisors is an integer number (769743).

Almost surely, 2^12409870 is an apocalyptic number.

12409870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12409870 is a deficient number, since it is larger than the sum of its proper divisors (12221906).

12409870 is a wasteful number, since it uses less digits than its factorization.

12409870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 12409870 is about 3522.7645393923. The cubic root of 12409870 is about 231.5203004401.

The spelling of 12409870 in words is "twelve million, four hundred nine thousand, eight hundred seventy".