244464381 has 36 divisors (see below), whose sum is σ = 412004892. Its totient is φ = 139273344.

The previous prime is 244464373. The next prime is 244464383. The reversal of 244464381 is 183464442.

244464381 is a `hidden beast` number, since 2 + 4 + 4 + 4 + 643 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 101183481 + 143280900 = 10059^2 + 11970^2 .

It is not a de Polignac number, because 244464381 - 2³ = 244464373 is a prime.

It is a super-2 number, since 2×244464381² = 119525667155426322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244464383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 200931 + ... + 202143.

Almost surely, 2^244464381 is an apocalyptic number.

244464381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

244464381 is a deficient number, since it is larger than the sum of its proper divisors (167540511).

244464381 is a wasteful number, since it uses less digits than its factorization.

244464381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690 (or 1680 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 244464381 is about 15635.3567596010. The cubic root of 244464381 is about 625.2761497548.

The spelling of 244464381 in words is "two hundred forty-four million, four hundred sixty-four thousand, three hundred eighty-one".