244979681 has 2 divisors, whose sum is σ = 244979682. Its totient is φ = 244979680.

The previous prime is 244979659. The next prime is 244979717. The reversal of 244979681 is 186979442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244140625 + 839056 = 15625^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 244979681 - 2²⁶ = 177870817 is a prime.

It is a super-2 number, since 2×244979681² = 120030088205723522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (244979381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122489840 + 122489841.

It is an arithmetic number, because the mean of its divisors is an integer number (122489841).

Almost surely, 2^244979681 is an apocalyptic number.

It is an amenable number.

244979681 is a deficient number, since it is larger than the sum of its proper divisors (1).

244979681 is an equidigital number, since it uses as much as digits as its factorization.

244979681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The square root of 244979681 is about 15651.8267623942. The cubic root of 244979681 is about 625.7151757790.

The spelling of 244979681 in words is "two hundred forty-four million, nine hundred seventy-nine thousand, six hundred eighty-one".