244662409 has 4 divisors (see below), whose sum is σ = 246448404. Its totient is φ = 242876416.

The previous prime is 244662371. The next prime is 244662427. The reversal of 244662409 is 904266442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 904266442 = 2 ⋅452133221.

It can be written as a sum of positive squares in 2 ways, for example, as 212343184 + 32319225 = 14572^2 + 5685^2 .

It is a cyclic number.

It is not a de Polignac number, because 244662409 - 2⁹ = 244661897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244662479) 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 3 ways as a sum of consecutive naturals, for example, 892792 + ... + 893065.

It is an arithmetic number, because the mean of its divisors is an integer number (61612101).

Almost surely, 2^244662409 is an apocalyptic number.

It is an amenable number.

244662409 is a deficient number, since it is larger than the sum of its proper divisors (1785995).

244662409 is a wasteful number, since it uses less digits than its factorization.

244662409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785994.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 244662409 is about 15641.6881761529. The cubic root of 244662409 is about 625.4449388519. Note that the first 3 decimals are identical.

The spelling of 244662409 in words is "two hundred forty-four million, six hundred sixty-two thousand, four hundred nine".