244998981 has 6 divisors (see below), whose sum is σ = 353887430. Its totient is φ = 163332648.

The previous prime is 244998959. The next prime is 244998991. The reversal of 244998981 is 189899442.

244998981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 236390625 + 8608356 = 15375^2 + 2934^2 .

It is not a de Polignac number, because 244998981 - 2⁹ = 244998469 is a prime.

It is a super-2 number, since 2×244998981² = 120049001382076722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244998991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13611046 + ... + 13611063.

Almost surely, 2^244998981 is an apocalyptic number.

It is an amenable number.

244998981 is a deficient number, since it is larger than the sum of its proper divisors (108888449).

244998981 is a wasteful number, since it uses less digits than its factorization.

244998981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27222115 (or 27222112 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 244998981 is about 15652.4432917037. The cubic root of 244998981 is about 625.7316070543.

The spelling of 244998981 in words is "two hundred forty-four million, nine hundred ninety-eight thousand, nine hundred eighty-one".