281444949 has 20 divisors (see below), whose sum is σ = 425505696. Its totient is φ = 185364936.

The previous prime is 281444941. The next prime is 281444983. The reversal of 281444949 is 949444182.

It is not a de Polignac number, because 281444949 - 2³ = 281444941 is a prime.

It is a super-2 number, since 2×281444949² = 158422518635225202, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281444941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14209 + ... + 27654.

Almost surely, 2^281444949 is an apocalyptic number.

It is an amenable number.

281444949 is a deficient number, since it is larger than the sum of its proper divisors (144060747).

281444949 is an equidigital number, since it uses as much as digits as its factorization.

281444949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41958 (or 41949 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 281444949 is about 16776.3210806184. The cubic root of 281444949 is about 655.3366946006.

The spelling of 281444949 in words is "two hundred eighty-one million, four hundred forty-four thousand, nine hundred forty-nine".