244672981 has 4 divisors (see below), whose sum is σ = 279626272. Its totient is φ = 209719692.

The previous prime is 244672979. The next prime is 244672997. The reversal of 244672981 is 189276442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 244672981 - 2¹ = 244672979 is a prime.

It is a super-2 number, since 2×244672981² = 119729735262852722, 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 (244672921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17476635 + ... + 17476648.

It is an arithmetic number, because the mean of its divisors is an integer number (69906568).

Almost surely, 2^244672981 is an apocalyptic number.

It is an amenable number.

244672981 is a deficient number, since it is larger than the sum of its proper divisors (34953291).

244672981 is an equidigital number, since it uses as much as digits as its factorization.

244672981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34953290.

The product of its digits is 193536, while the sum is 43.

The square root of 244672981 is about 15642.0261155644. The cubic root of 244672981 is about 625.4539473311.

The spelling of 244672981 in words is "two hundred forty-four million, six hundred seventy-two thousand, nine hundred eighty-one".