12443790 has 16 divisors (see below), whose sum is σ = 29865168. Its totient is φ = 3318336.

The previous prime is 12443789. The next prime is 12443791. The reversal of 12443790 is 9734421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12443789) and next prime (12443791).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 414793 = 12443790 / (1 + 2 + 4 + 4 + 3 + 7 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443791) 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 7 ways as a sum of consecutive naturals, for example, 207367 + ... + 207426.

It is an arithmetic number, because the mean of its divisors is an integer number (1866573).

Almost surely, 2^12443790 is an apocalyptic number.

12443790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12443790 is an abundant number, since it is smaller than the sum of its proper divisors (17421378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12443790 is a wasteful number, since it uses less digits than its factorization.

12443790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414803.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 12443790 is about 3527.5756547521. The cubic root of 12443790 is about 231.7310473266.

The spelling of 12443790 in words is "twelve million, four hundred forty-three thousand, seven hundred ninety".