244691081 has 8 divisors (see below), whose sum is σ = 259669800. Its totient is φ = 229777408.

The previous prime is 244691077. The next prime is 244691087. The reversal of 244691081 is 180196442.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 165765625 + 78925456 = 12875^2 + 8884^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 244691081 - 2² = 244691077 is a prime.

It is a super-2 number, since 2×244691081² = 119747450241897122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244691087) 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, 8396 + ... + 23661.

It is an arithmetic number, because the mean of its divisors is an integer number (32458725).

Almost surely, 2^244691081 is an apocalyptic number.

It is an amenable number.

244691081 is a deficient number, since it is larger than the sum of its proper divisors (14978719).

244691081 is a wasteful number, since it uses less digits than its factorization.

244691081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32523.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 244691081 is about 15642.6046744140. The cubic root of 244691081 is about 625.4693698722.

The spelling of 244691081 in words is "two hundred forty-four million, six hundred ninety-one thousand, eighty-one".