244666407 has 4 divisors (see below), whose sum is σ = 326221880. Its totient is φ = 163110936.

The previous prime is 244666403. The next prime is 244666481. The reversal of 244666407 is 704666442.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 244666407 - 2² = 244666403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244666403) 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 3 ways as a sum of consecutive naturals, for example, 40777732 + ... + 40777737.

It is an arithmetic number, because the mean of its divisors is an integer number (81555470).

Almost surely, 2^244666407 is an apocalyptic number.

244666407 is a deficient number, since it is larger than the sum of its proper divisors (81555473).

244666407 is an equidigital number, since it uses as much as digits as its factorization.

244666407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81555472.

The product of its (nonzero) digits is 193536, while the sum is 39.

The square root of 244666407 is about 15641.8159751354. The cubic root of 244666407 is about 625.4483456077.

The spelling of 244666407 in words is "two hundred forty-four million, six hundred sixty-six thousand, four hundred seven".